If things stay as they are, I think it would be too tight/too stressful to try to get to Oga on time. However, I would hold off on canceling for now. I wonder if they are going to end up adding a second Fantasmic show, especially during your busy holiday week, and so your dining package for the first show may end up being a 7:30 show and then they add a second later show. I have no insider knowledge on this or anything; part of it is based on the fact that I didn't see any Fantasmic dining reservations after about 5:30pm. It makes me wonder if they cut those off early so that people could eat and get to a 7:30 show should they need to add a second. Maybe early dining times is how they've always done it, but it makes me wonder. It will be interesting to see if they add a second show over Thanksgiving and I'd be tempted to wait until at least then to cancel Oga.