We went last year, but not very far in advance. We booked about 2 weeks before we left and purchased tickets for MNSSHP.
This year, we are going in October (booked yesterday yay!) and have plenty of time to plan.
I know that the ADRs can only be made 180 days in advance, but are the special events the same. When we booked, the lady told us that the dates had not been released yet.
The most important reason I need to know the dates is so that I can plan our ADRs! I don’t want to plan dinner for the same night of the party.