I have provided you 3 scenarios; and tire of attempting to read your mind. How would (Disney, Six Flags, SeaWorld, Busch Gardens, Magic Mountain, et. al.) be able to sue, if they were named as the recipient of a group's gathering place? Can you cite a single example?
If 'The Hillary Rodham-Clinton fan club' wanted to use your resturant, hotel, theme-park, zoo or city park as a meeting grounds; you are prohibited by law from preventing them to do so.
However, as this is YOUR park (as in Sea World, Disney, 6 Flags, MM, et. al.), YOU can place limits on what is tolerated and what is not. For example, if you state that you have dress codes for EVERYONE, you may enforce that. Same thing for permissable behavior. Also, to the best of my knowledge, local laws would also be enforced (lewd or profane conduct would not be tolerated).
For example, there are signs at both Disney Land, and Disney World warning that pranity will not be tolerated. You can be ejected from the park for swearing.
OK so you are willing to state that Disney has never sued a non-commercial entity for using their name, right?
C'mon. Be a man. Say "Yes Hank. Disney can't sue someone for using their name to promote their event". You can do it.
My guess is that you KNOW they can and you don't want to admit it. Disney has sued lots of people for using their name without permission.
What about business establishments that have a sign saying, "We reserve the right to refuse service to ..."? Is that legal or illegal? Or does it just depend on the business?
No you are not. You can close your business any time you choose to without explaining to anyone why you chose to close.
Many hotels close for black spring break rather than rent rooms to the thugs who inevitably act out on that week.
Since this event is timed to coincide with another larger event it would be simple to close the park for maintenance until the perverts leave. One weekend lost revenue versus permanently lost reputation.
I'll not attend another six flags park again. They've proven to be just as perverted and family hostile as disney. They don't deserve my dollars