We had a good number-crunching session this week and realized we will have space in the budget for late night snacks.  Yay!  
My initial thought was sushi, since I don't like eating anything too heavy late at night, but FI pointed out people are likely to be drunk and tired and craving something a bit more hearty at that point.  I'd love nachos, but cheese, salsa, alcohol, formal wear and me sound like a deadly combination.  So maybe pizza?  Grilled cheeses?  Warm pretzels with dips?  
What do people think?