My mom, bro & bro's gf are coming over for "cake & ice cream" to celebrate his bday. The get together starts at 4, and should be 2-3 hrs max. I already told my mom not to expect a full meal. This is also a meet & greet with the girlfriend. Here's my snack menu:

cold spinach dip with two types of crackers/ breads
veggies w/ semi-homemade green goddess dip
meatballs (BBQ & jelly in slow cooker)
strawberry & peach trifle
lemonade (chick fil-a)

should I spike the lemonade with champagne or white wine?

Is my menu sufficient to hold them off til they have dinner elsewhere?