If you began the Jewish festival early and you are at a minyan where they are saying kedusha for mincha before the Jewish festival, you should reply to kedusha.

If the leader gets to kedusha on Shabbat or Jewish festival morning and you are saying the amida, you must:

• Pause until the leader has finished the blessing after kedusha (ha'el—or ha'melech—ha'kadosh), and then

• Resume your amida.

During birkat cohanim, you must:

• Pause in your amida until the end of birkat cohanim.

EXCEPTION Do not pause, even if the leader says kaddish or kedusha, if doing so will delay you past the fourth hour.

You may continue riding in a car or taxi driven by a non-Jew between sunset and dark (tzeit ha'kochavim) beginning a Jewish festival, even if the vehicle is driven just for you. You:

• May not do this on Shabbat.
• Must have already paid before sunset. 
• May not open a door that will cause a light to turn on or do any other melachot.
• If you have already traveled outside techum, you may move only 4 amot (85” or 116 cm) away from the vehicle, unless the driver leaves you off in an enclosed domain (any area surrounded by walls or an eruv), in which case you may go anywhere in that domain.
• If you had not gone outside of techum, you may go anywhere in the domain and you may also go up to 2000 amot (3,542 ft. or 1,080 m) outside of the domain.

Charity/tzedaka should be paid by the third Jewish festival (Passover, Shavuot, Sukkot) after the money is received.

All of the Jewish festival holidays had an agricultural element to them.
 
Agricultural laws include Kilayim, Orla, Reishit, Teruma/Ma'aser, Shmita, and Yashan, as well as special laws applying only to fruit trees. Some of these laws still apply today by Torah law (d'oraita) while others, such as First Fruits (bikurim), only apply when the Jerusalem Temple stands and so are not practiced now. Others are observed today as "practice" for when the Temple is rebuilt.

Sukkot means “huts.” The Jewish festival of Sukkot celebrates and commemorates the shelters in which the Israelites lived for 40 years after leaving Egypt.
 
Symbols
The main symbols associated with Sukkot are living in a sukka (eating and, when possible, sleeping in the sukka) and the lulav and etrog.
 
Sukkot is observed at fall harvest time.  When many Jews were feeling wealthy due to their produce, we were commanded to live in temporary shelters--in part, to ward off feelings of arrogance or pride in what we had accomplished in the material world. Instead of thinking or feeling that our hard work or great wisdom has made us wealthy, we are reminded that whatever we have comes from God, and that God will take care of us, even in a flimsy “house.”
 
The lulav and etrog have many meanings.  Here are two:
 
Likening to the Human Body
The four components are compared to four parts of the human body:

• Palm branch: Spine.
• Myrtle leaves: Human eyes.
• Willow leaves: Human lips.
• Etrog: Human heart.

When we hold the four parts of the lulav/etrog together, we are symbolically taking the various components of our bodies together to serve God.
 
Likening to Types of Jews
The four components are likened to four types of Jews:

• Etrog smells nice and tastes nice--like a tzadik who is knowledgeable in Torah and does mitzvot;
• Myrtle smells nice but does not have a good taste--like a person who does mitzvot but is not knowledgeable in Torah;
• Palm tree (date palm) has a nice tasting fruit but no scent--like someone who has knowledge but lacks mitzvot;
• Willow does not smell nice nor has a good taste--like a person who has neither.

By holding them together, we show that all types of Jews are to be consider as one nation.

Flushing a toilet on a Jewish festival is not a violation of transferring from domains.

If a Jewish festival is over where you are, you may speak by phone to non-Jews in a place that is still observing the Jewish festival.

For Jewish festival havdala, use only wine (or a substitute, chamar medina, beverage); NO candle or spices (unless the Jewish festival also coincided with Shabbat).

As on Shabbat, light Jewish festival candles wherever you will eat dinner that night.

You may squeegee a floor on Shabbat (or Jewish festival)--as is commonly done in Israel, but you may not push the water onto earth or plants.
You may mop up a local spill but only without squeezing out the rag or mop.
 

Unlike on Shabbat, on a Jewish festival you may select (boreir) and remove unwanted cards (such as Jokers).
 

To fulfill the two requirements for Jewish festival daytime kiddush:

1. Say, or hear, at least #b and #c of these Jewish festival daytime kiddush blessings/segments:
   a) Eileh mo'adei Adonai mikra'ei kodesh asher tikri'u otam b'mo'adam.
   Note It is not a universal custom to say the above sentence.
   b) Va'yidaber Moshe eht mo'adei Adonai el bnei yisrael.
   Note It IS a universal custom to say the above sentence. AND
   c) Borei pri ha'gafen (if on wine or grape juice), OR
   She'hakol nihiyeh bi'dvaro (if on other beverage/chamar medina).
   Note For Jewish festival (or Saturday) lunch and havdala, you may use any beverage (chamar medina) commonly drunk for social purposes (not just for thirst) in the country in which you are saying kiddush (say the blessing she'hakol instead of borei pri ha'gafen where appropriate).
   Note There is never any requirement on an indvidual to drink kiddush wine (except at the Passover seder), but the kiddush wine must be drunk by one or more persons.
2. Establish a halachic “meal” (kovei'a se'uda).
   You must establish the halachic meal required for kiddush shortly after hearing Jewish festival morning kiddush. See How To Fulfill Eating Jewish Festival Second Meal.
   
   Note If you make Jewish festival morning kiddush on any beverage except wine or grape juice, you must also eat mezonot or bread to establish the kiddush meal. If you do not want to eat bread or mezonot, only drinking 3.3 fl. oz. (99 ml) of wine or grape juice within 30 seconds will fulfill all of the requirements for kiddush.  If you have not fulfilled the requirements for kiddush, you may not eat other foods, such as fruit or fish at a kiddush.

To fulfill the two requirements for Jewish festival evening kiddush:

1. Make Kiddush
   Say, or hear, the three Jewish festival evening kiddush blessings/segments:
   1. Borei pri ha'gafen (if on wine or grape juice—preferred option), OR
      Ha'motzi (on two challot if you have no wine or grape juice, since no chamar medina is allowed for Jewish festival evening kiddush; see Jewish Festivals: Kiddush: Challot for Kiddush) AND
   2. Asher bachar banu mi kol am.... mekadeish Yisrael v'hazmanim, AND
   3. She'hecheyanu on all Jewish festival nights, except the last two nights of Passover.  So say she'hecheyanu on:
      • Both nights of Rosh Hashana (in or outside of Eretz Yisrael),
      • First two nights of Passover (1 night in Eretz Yisrael),
      • Both nights of Shavuot (1 night in Eretz Yisrael),
      • First two nights of Sukkot (1 night in Eretz Yisrael), and
      • Nights of Shmini Atzeret and Simchat Torah (same day in Eretz Yisrael).
      Note There is never any requirement on an indvidual to drink kiddush wine (except at the Passover seder), but the kiddush wine must be drunk by one or more persons.
      Note A woman who had said she'hecheyanu when she lit the Jewish festival candles does NOT say she'hecheyanu again if she makes kiddush for herself, even when making kiddush at the Passover seder.
      Note There is no need to eat a new fruit after saying she'hecheyanu on the second night of  Shavuot, Passover, or Sukkot. This is not comparable to Rosh Hashana, since the second festival night was instituted due to uncertainty of the actual date of the holiday, while Rosh Hashana is considered to be one single, long day.
2. Establish a halachic “meal” (kovei'a se'uda).
   For how to establish a halachic meal, see Introduction to Jewish Festival “Eating a Meal” Requirements.

Like Shabbat candles, Jewish festival candles should be lit only by one person per home. Priority order: wife; then husband; then children.
It is customary for each married woman to light candles on each festival even though she is not eating in her own home and even though her hostess is already lighting candles. She may light her candles at her hostess's house or at her own home (but if at her own home, she must see the candles are burning after dark if she lights there).
Girls should not be encouraged to light Jewish festival candles except when no parent can.
Single people should light Jewish festival candles in their homes if they will eat there.