I'll be quite surprised if Frozen 2 can be as big as the original. The main complaint on Day 1 will probably be "no Let It Go!" It's going to be tough for them to top or equal that song and it's what people will expect out of Frozen 2 more than anything else IMO. Quite honestly, I thought that the original Frozen was a fairly average movie with a soundtrack (mainly driven by one super song) that that enabled it to go to that next level, so maybe I'm biased.