Don't think I'll try to ride it (don't get on with spinny rides), but it sure looks pretty at night in the videos and I had forgotten I wanted to add that to my list, so thanks for the reminder!
The rope drop show is a few minutes before opening, but my understanding is that means that people from offsite don't get to see it when there's EMH there. Although if you're staying at the Grand Floridian, that won't be an issue!

I have also heard that it can be abbreviated on EMH days, dunno if that's a rumor or reality.
Should be every night, and generally hits the Grand Floridian about 9:15 I think. Check Steve Soare's site the week you're there for more current info (the water parade is down at ]
THANKS EVERYONE! HAPPY PLANNING