Hi, Kristy,
Although they are not planning to serve a meal, if the wedding is noon, many people will arrive not having eaten lunch and they will be hungry. So yu need to sit down with these folks and talk a little about amounts. It is disastrous to run out of food at a wedding reception, and the caterer is ALWAYS blamed; it can ruin your rep!
This looks like not nearly enough food to me. For example, in the tea sandwiches article, I discuss that for 120 people who are hungry, you need 6-8 pieces per person (the amount you would use for 250 in mid afternoon), and discuss amounts:
www.ellenskitchen.com/bigpots/plan/recep2.html?
That is 1 1/2 to 2 full size sandwiches per person. Your present estimate is not even enough for the midafternoon amounts.
I would use pasta salad based on 10 pounds of pasta- it is a cheap filler.
You need to calculate 4 meatballs per person, not 2, especially since there are no other hot dishes.
Veggie tray, cheapest filler, allow 6-8 pieces or about 3 ounces per person, plus 2-3 quarts dressing per 100.
Fruit, see the fruit tray page. Try to get them to accept 6 times the amount for the fruit tray for 25 and serve as trays, not salad- it makes a much better display.
I would try to get them to add a cheese tray selection, at least 18-20 pounds- most of this could be cheese logs, balls and spreads, less expensive than solid cheeses- plus 9 pounds of crackers or 10-12 of bread. Part of the cheese weight could be egg salad.
I would also strongly suggest 9 pounds of mixed nuts for the tables.
You need to talk with them about beverages?