Tanayim are written; an acquisition (kinyan) is made; and the tanayim are read. The mothers of the bride and groom break a china plate.
 

You may not acquire items (kinyan) on Shabbat unless they are needed for that Shabbat or for doing a mitzva. The classic example of doing something for Shabbat is bringing food or drink to a house for Shabbat lunch, which the house owner acquires on Shabbat for Shabbat. Other permissible kinyan on Shabbat:

•  Giving a siddur or chumash to use on that Shabbat.
•  Giving permissible medicine for use on that Shabbat.

You may not acquire items (kinyan) on Jewish festivals unless they are needed for that Jewish festival or for a mitzva. The classic example is bringing food or wine to a house for Jewish festival lunch, which the house owner acquires on the Jewish festival for the Jewish festival. Other permissible kinyan on Jewish festivals is giving:

• Siddur, machzor, or chumash to use on that day.
• Permissible medicine for use on that day. 

On bringing mail or a newspaper into your house on Jewish festivals, see Jewish Festivals: Bringing Mail inside House  and Jewish Festivals: Bringing Newspaper inside House.

The purpose of the rabbi at a wedding is to ensure that the extremely detailed wedding halachot, as set out by the Shulchan Aruch, are followed correctly. If not, the wedding might not be kosher.
 
A Jewish marriage includes: a written document (ketuba); a financial transaction (ring) in front of two kosher witnesses; and physical intimacy. 
 
Witnesses
 

• The witnesses must be shomer Shabbat Jewish men.
• The bride and groom should confirm verbally that these are the two (and the only two) witnesses that they want.  

 
Ring

• The groom must confirm that he acquired and owns the ring.
• The groom must say Harei at mekudeshet li ...  to the bride and place the ring on her (index) finger.

 
Ketuba

• The ketuba must be kosher.
• Before the chuppa, someone (anyone, including women) must fill in (no safrut is required for this):  the Hebrew names of the bride and groom; the date the wedding is taking place; the wedding location (city, etc.); and that a kinyan was made.
• The ketuba must be signed by two kosher witnesses.

You may bring a newspaper, magazine, or other reading material inside the house on Shabbat and read it if there is an eruv, unless it was:

• Brought from outside the techum Shabbat, OR
• Printed on Shabbat, OR
• Delivered by a Jew.

If any of these conditions apply, you may not use it in any way on Shabbat, even if all of the other conditions would have permitted its use. You may use it once Shabbat is over.

You may bring a newspaper, magazine, or other reading material inside the house on Jewish festivals and read it, UNLESS it was:

• Printed on Shabbat or a Jewish festival, OR
• Brought from outside the techum Shabbat, OR
• Delivered by a Jew.

If any of these conditions apply, you may not move it or use it in any way during the Jewish festival, even if all of the other conditions permit its use. You may use it once the Jewish festival is over.

Property may be given away in any manner and amounts desired during a person's lifetime. A Jew must give his property away before death if he does not want to make the inheritance according to Jewish law (such as double portion to a father's first-born son, etc.--consult a rabbi for details). A person should reserve some money to fulfill the Torah commandment of inheritance. Consult a rabbi.
Since a person cannot give away property after his/her death (since he/she does not own it anymore), an American will has no halachic validity. An American will should be written to keep the inheritance out of the hands of the government and lawyers. In order for a secular will to be effective under halacha, an acquisition should be made that starts to take effect beginning at the time of the kinyan and finalize one hour before the person's death. 
Rabbinic guidance is recommended.

The International Dateline (IDL), which is 180 degrees away from Greenwich, England, crosses the Pacific ocean from north to south and divides a region of safek/doubt as to which day is Shabbat. This region's eastern boundary is a line 180 degrees east of Jerusalem, which lies between Hawaii and the US mainland; the western boundary is east of Shanghai. All countries in this region of IDL safek/doubt are island countries.
 
In a region of doubt, such as Tasmania, keep normal Shabbat (Shabbat d'rabanan) on local Saturday and keep Shabbat d'oraita on:

• West of mainland USA, but
• East of the IDL, and
• Not attached to the mainland.

• West of the IDL, but
• East of Shanghai, and
• Not attached to the mainland.

Note In all cases, you must still observe regular Shabbat on Friday night/Saturday.
Situation
You are in a place near the International Dateline (IDL) in which you are not sure which day of the week it is halachically: Shabbat or, if you are east or west of the IDL, Friday or Sunday.
What To Do
On the Friday or Sunday in question, there is no shvut (d'rabanan prohibitions, including muktza), so you may do all melacha d'rabanan WITHOUT a shinui. You may:

• Ask or tell a non-Jew to do anything, including a melacha d'rabanan or d'oraita.
• Ride in a cab or car driven by a non-Jew.

• Use electricity--except for heat or light—including turning on a fan or air conditioner (heat and light are forbidden by the Torah).
• Use the telephone. (Using a cellphone may be permissible--ask a rabbi).

• Carry from a private domain (reshut ha'yachid) to another private domain, even through a public domain (reshut ha'rabim); but you may not stop walking in the public domain and you may not put the object down in the public domain unless you use a shinui.
• There is no practical way to light candles, even using a shinui, but a non-Jew may light them for you and and you may say the blessing on the candles.
• Swim, surf, scuba dive, climb, and play all games that do not use melacha. You may not wring out clothes and if you are swimming or scuba diving, your swimsuit or wetsuit must be clean.
• Walk any distance (there is no techum Shabbat d'oraita).
• Kinyan. You may acquire items.

• Fly, including check in and getting on plane if:
  • The pilot is non-Jewish, and
  • You don't do any melacha d'oraita (including any writing) without a shinui.
• Use a computer if it automatically goes to sleep after less than 24 hours of not being used.
• Shower. However:
  • You may not use an “instant on” hot water system in which the water is heated as you use it; you may only use the hot water if it has a holding tank.
  • You may use only liquid soap; hard soap is forbidden.
• Ingest medicine (but you may not smear it on skin).
• Use some make up, such as rouge, mascara, eye shadow. You may not use lipstick.
• Open a refrigerator with light (and all other psik reisha d'la neicha lei).

• You may buy necessities on Friday or Sunday as long as:
  • The store owner is not Jewish (or if he/she is Jewish, does not write or print a receipt),
  • You do not write, and
  • There is no reshut ha'rabim.

You may also do melacha d'oraita if:

• You use a shinui (non-normal way of doing that action--this is forbidden d'rabanan on Shabbat but is allowed on the Friday or Sunday in question), OR
• Two or more people do the melacha together.

 
D'oraita, you may not:

• Cook food.

• Turn on lights (but you may turn them off).
• Carry from domains.
• Boneh – building any permanent structure.
• Write two or more letters of the alphabet.
• Drive--there is no practical way to drive using a shinui.
• Shave--there is no practical way to shave using a shinui.
• Use toothpaste (but you may use tooth-cleaning powder).
• Use skin cream--you may dab it on without smearing it.

However, you may do these following actions with a shinui on the Friday or Sunday in question, as follows:

• Cook food. You must put food in the cooking utensil first, then turn on the heat with shinui. You may turn off the heat even without a shinui.
• Turn on lights (such as with your elbow).
• Stop along the way when carrying from a private domain (reshut ha'yachid) to another private domain, even through a public domain (reshut ha'rabim). As a shinui, you may carry the object in your mouth (as long as it is not food), etc.

Note Carrying something in your pocket is NOT a shinui.

• Tear paper (such as putting toilet paper across knees and moving the knees apart).
• Write (such as with the opposite hand).

Flying East From Australia on Sunday If You Cross IDL from Friday into Saturday

Say the entire prayer service (and not just the public portions) according to the custom of the minyan of which you are the leader, even if it differs from your custom.
 

At a minyan with a custom different from yours, say their version of kedusha.
 

In general, praying with a large group of Jews is preferable to praying with a small group.

A mezuman or minyan is permitted at the pre-Yom Kippur meal (se'uda ha'mafseket).
Reason It is a festive meal.

If you are outside the room in which a minyan is praying, you may still join and reply to all of the prayers as long as:

• You can see or hear the congregation, or
• There are at least 10 men (in addition to you) inside the main room.

 

On Shabbat, even if there will not be at least nine men answering amen to the reader's repetition of the amida, the reader should say the repetition anyway, without intending that his repetition be counted as a nedava (which can only be offered on weekdays). If less than six men will be answering, the leader must wait before doing the repetition.
 

You do not need a minyan to say kiddush levana.