Casual. There is no dress code!

1st depends from the quality of the Moscato. When I am in Italy I use to buy Moscato di Pantelleria, 500 ml, for 60 euro (90 dollar) from the enoteca. 2nd I agree with John, restaurants inflate the prices.

Considering the number of dishes they serve which are derived from pork. I'd say it is highly unlikely.

No happy hour at this place, its a pizzeria

No

I haven't seen any but you should call them to confirm.

Yes