I thought about the dessert party- but ultimately I think it will be waaaay to much dessert for us after 2 snacks and 2 desserts already/day.
And, it's hard for us to fit in- I wanted to go Tues the 13th, but Wishes is at 9,
I'd need to make my lunch and dinner ADR's earlier, and it messes up my whole touring plan
BUT, you could easily do it after Kona on the 11th and stay for EMH

Kona is an easy one to make a little earlier if you need to, and it's early enough in your trip that you wouldn't be sick of dessert yet. I say if it's still less than $20/pp, go for it!