Legalese to keep Disney from being sued by someone who buys the tickets and then uses them on 3 consecutive days because they think they have to. So, using that verbiage covers them legally as it clearly states that use on non-consecutive days *is allowed*.
What also adds punch is using real premium ice cream and bittersweet chocolate in the Parks' ice cream bar as opposed to low-fat ice cream and cocoa powder in the store version. ;-) There's a reason the word 'Premium' is on the packaging at the Parks and not on the store box.
Even more likely is early to mid-November.
As Disney now has their own CMs portraying SW characters, the 501st wouldn't likely be officially involved. But there would likely be many members there in costume, if allowed, unofficially.
This hotel is planned to be restricted. This is why it has private entrances to and from Star Wars Land, etc. It's also why it's a 2-night experience at such a very high rate. So, no, you likely won't be able to visit unless reserving rooms there.