Hoop Dee Doo is reported to be trying out the more limited schedule in the fall.
But there are actually 3 shows every night- all year round. 5pm, 7:15pm and 9:30pm.
If you have the Dining Plan attached to your reservation, I do not believe you have to pay in advance. Just let them know when you reserve. You may still have to provide a credit card that would be charged only if you did not show, or cancel at least 48 hours prior to the show.
I can't remember for sure, but I do not think you need "hard tickets" for HDD. I am pretty sure your name is just on the list when you arrive and check in. Perhaps someone who has been recently can remember better than I do? I would make sure to have your ADR# with you, just in case.
I am pretty sure they tell you to arrive about an hour ahead. I think that's a bit excessive, but they do have a lot of people to check in. I suggest about 30 minutes or so should be fine. There is lots to do in the immediate area- wander the grounds, check out the Settlement Depot (gift shop), watch the boats come in, etc. SO if you're early- it will be fine.
The doors open about 5 minutes before show time, and seats are pre-assigned (based on when the ADR was made).
Disney & Orlando Dining/Nightlife, Shopping & Water Parks/Disney Vacation Club
DVC owners at WLV, BCV and SSR
Next up: VWL & POFQ Dec 2009 - just adults!
On Deck: DCL Wonder Dec 2010... but I'm sure we can come up with something before then!