I hate it when I'm served salad on a hot plate - one that probably just came out of a dishwasher. At a meeting this afternoon I ordered cake a la mode for dessert and the plate it was served on was chilled. I don't recall ever getting a chilled plate but it was the perfect detail b/c the ice cream didn't melt as quickly.
I don't know how much control you have over this for your wedding, though you can bring up the subject at a meeting with your caterer, but it's something to think about when serving food at home.
