We just did this this week. It was lovely. Like an earlier poster said not sure any if any of the dessert parties are worth the money and it is also easy to find a spot to watch illuminations, however the experience was valuable to us. I’m sure they would provide sugar free deserts if requested. They did also have cheeses, fruit, pita/flat bread, cheese fondue in addition to the desserts. They serve some specialty drinks, wine, beer, coffee/tea, juices, soda and water too.
The show was fabulous. The ride on Frozen afterwards was worth not having to use a FP or wait in line.
The tables seem to be set for either 4, 5 or 6. We are a family of 3, so we were seated with a couple. At first, I didn’t like the idea as we are rather introverted, however we really enjoyed our time with them. They were like old friends by the end of the party.