....it has no Star Wars in it!
If you read any description of RotR, it will tell you something about General Organa, Rey, and Kylo Ren. Here's the problem: Nobody knows who they are. If you don't believe me, just ask people around you who General Organa is, then ask them who Princess Leia is. I tried it on my husband and kids, and nobody but me knows who General Organa is, and we even watched Episodes 7 and 8! I didn't know it either until I read it once by accident. Princess Leia is an iconic American figure. General Organa is a minor character in a couple of forgettable movies among the zillion forgettable movies made every year.
And RotR is about a Star Wars battle that nobody has ever heard of. It will be popular because it's fun to move around in a cart, but not near as popular as it should be, just like Smuggler's Run. My kids liked Smuggler's Run (they always got the pilot role, for some reason), but they didn't recognize any of the characters or scenes in there besides the falcon itself, so they liked it no more than Star Tours. RotR is a trackless ride, which is new and interesting, but so is the Mickey Minnie Railroad ride and the Ratatouille ride. I am waiting to see Mickey and Ratatouille beat out RotR in wait time and popularity. (I will be spending my fastpasses on them rather than RotR, for sure.) For one thing, they will be more popular with kids. For another, they are more Disney.
To this day, Disney have not admitted that they screwed up Star Wars Land big time by forgetting to put Star Wars in it. But one thing they cannot deny forever, and that's their profit margin. Come December when It's a Small World beats out RotR, Disney will have to face the truth. (You think I'm exaggerating? When I was at WDW last week, not even a month after SWGE's opening, Pirates of the Caribbean and Jungle Cruise both had a longer wait (55min) than Smuggler's Run (45min). FoP had 135 minutes wait.)
For those people who claim that GE has the Falcon, and therefore it has Star Wars in it, here is my answer: I have the 5000-piece
Lego Millennium Falcon set in my basement. I also have various Darth Vader and Storm Trooper masks, blasters, light sabers, the X-Wing, and various other SW junk scattered around the house, like any family with boys. Doesn't make my house Star Wars Land, does it?