IMO, I think any dessert party during a ticketed event is poor value. You are already paying to enjoy
MVMCP, which includes a few different treats with your ticket. Plus the time you need to invest in the dessert party doesn't allow you to enjoy everything(Meet & Greets, Parade, shows, etc.) you paid for with your MVMCP tickets. I would suggest if you really want to do a dessert party that you do the HEA, Frozen/Illuminations, JBJB or Star Wars dessert parties instead.