Thanks, that is what I was afraid of.... we ate at O'hana once before at 8pm and the resturant just didn't have the same feel as it does with an earlier ADR. The "entertainment" even stopped well before our meal ended and it was getting rather "dead' in there. We enjoy the lively atmosphere of the resturant so it was sort of disappointing.
But I can't see any other option when trying to catch Fantasmic. The resturants in HS don't appeal to us and I can't figure it out to eat at O'hana another night based on our plans. I wish Fantasmic was also being shown later that night and we could do an early dinner and then come catch the show!!!