Thanks for the responses - and I didn't mean to "abandon" the thread!

Yesterday was a busy one.
Yes, I deliberately planned the party from 3-5 so as to be "between meals," but I totally get how the food might seem...sparse. I was a bit worried about that.....I'm living in the U.S. south, and am used to my in-laws putting out massive amounts of food for the smallest gathering. To be honest, it sometimes bothers me how much goes to waste.
There are going to be a LOT of people there, though. We're up to 19 kids, each with (at least!) one parent, and a smattering of little sibs as well. I will definitely pick up some string cheese, and will provide another few bowls of chips, etc. I try to keep things reasonably healthy (like not offering candy at all), just b/c that's important to me, but I'm also aware that nobody wants "healthy" cupcakes. LOL

I was trying to think of another 'snacky' thing....maybe those yogurt squeezers?
And I appreciate the comments about having some sort of structure.....this was in the back of my mind, so it helps to have it validated. I'm thinking something like:
3-3:30ish - arrival and playtime
3:30ish - some kind of game......any suggestions??
4:00- cupcakes
4:45 - pick favors and prepare for departure