Am I Allowed To Assign Each Dinner Party Guest A Particular Cupcake Ahead Of Time?

GOOD QUESTIONMy significant other and I were invited to a dinner hosted by another couple, with a third couple also in attendance. We were asked to bring dessert, so we brought a large selection of cupcakes.

My SO and I put a lot of effort into picking out flavors for each guest rather than opting for a random assortment, and we were looking forward to doling them out after dinner.

The hosts' neighbors dropped by unexpectedly before dinner and were asked to stay. I felt slightly annoyed that our deliberate cupcake selection would be thrown off, but it hardly mattered when I realized that the host had already allowed each of his two kids to help themselves to a cupcake.

Was I justified in feeling annoyed by my dessert being distributed not as I'd thoughtfully intended, or was it considered the hosts' right to do with it what they pleased?