We just did this today! It was fun and my 4 yr old had a great time. You get there about 1/2 an hour ahead of time and they take about 24 - 30 kids per session. They give you a chef's hat, then they show the kids to a table, which has a chef's helper assigned to it. That adult CM helps the kids do everything. They make a recipe for fruit pops (frozen) as a group. The kids are assigned to do a specific task to help with the recipe. One adds mango pieces, one sugar, one stirs, one adds water, etc. Then the recipe gets put in the "Magic freezer" and they are given packaged juice pops at the end. Goofy plays a game with them during the event.
Zoe had a fabulous time and talked about it all day!