I don't know the answer to that one. I know you can reserve ahead of time like you do at WDW. We saw the area outside that they used to use for the luau........still had chairs and tables set up, but the auditorium area they advertised was inside the convention section somewhere and we never bothered to go in and see where that was. About 10 years ago we did the Poly. luau at WDW but I made the ressies at the same time we made the vacation plan. We enjoyed that, they took my son on stage with them because he was one of the "birthday kids". We had also heard from people that it wouldn't be worth doing....but we thought that one was neat. Another way to see some hula dancers, ukelele, etc. is to eat dinner at the Island Cafe. They had strolling entertainment there---you get a schedule when you check in. They were picking out diners as they strolled around and there were impromtu hula lessons going on. We thought that was fun! (and it didn't cost extra besides our reg. dinner!)
5 more days, till Universal! 
