The only places we have found that were open to doing this was the food courts at the value resorts. Since they have ice cream, it would melt before you were ready, so the CMs would stamp your receipt so you could return, but not sure how long you got since we returned within 30 minutes of eating our food. Most other CS meals (at parks) do not have ice cream as your desert. You generally get a packaged desert, choc. cake, carrot cake, brownie, and a few others.