Dessert parties are always listed this way. It's just a placeholder. Once the times of the actual fireworks are decided (and at MK that time may vary) then if you inquire they will usually tell you something like be there 1.5 hours prior to the dessert party.
For the Star Wars in the past and looks like now it's the same you check in earlier in day right up to the time of the party. They probably give you a special wristband or something. Then they will tell you what time the line will be let in to the party and you can decide when you want to get in line. They will also tell you where it is being moved indoors if need be. Unlike MK parties there have so far been no reserved tables because there are no chairs and not enough tables for each group, many will share. So getting in line early will be important if you want to pick your table/area.
On the website:
- Please check in for this event at Center Stagelocated next to Min and Bill's Dockside Diner.
- The party location is outdoors and uncovered. In the event of inclement weather, the dessert party may be moved to an alternate indoor location.