They are not entitled to just because they own the joint or run the show. Any condition must be reasonable and must have merit.
Yes they are. I repeat, they do not have to be reasonable or even fair. As long as their policy is not overtly discriminatory then they are entitled. I have the same rights on their property as a pair of Jehovah's witnesses have in yours.
And it's beefs in the plural, as listed above in my handy cut out and keep bullet points.
If the OP is formally involved with a children's organisation, they will have a form of CRB. THe post certainly suggests a ormal involvement
I'm not CRB checked, but I'm not doing anything that requires a CRB check. This goes back to to one of my original points that the scope of child protection is both widely misunderstood and abused.
If you need further evidence, I could have tried to take photos of the adult teams only, where all participants are over 18 (the 'mazingstoke adult team has two skaters in their 60s). Trust me, it wasn't going to be allowed, despite the raison d'etre of the ban being 'child protection'.