On festivals such as Passover, wine is had.
It depends on the holiday.
No. Jews cannot drink pig milk according to the laws of Kashrut.
No
Yes. Religiously observant Jews will only drink kosher soft drinks. Most major brands are kosher.
Yes.
Jews were fleeing slavery in Egypt.
Jews usually leave festivals happy, just like most people.
No. Jews are not allowed to eat or drink blood (Leviticus ch.3).
The La Tomatina is a festival where everyone throws tomatoes at each other. The people that go to the festival drink beer, wine, liquor, and soft drinks.
Absolutely nothing. Diwali is a Hindu festival. It is not recognised by Judaism.
Hanukkah (also spelled Chanukah)
Praying for God's forgiveness and fasting.