A Pinnie Parlour .......thats history.

A pinball museum sounds like ......sssssssssst be quiet.

I think something like a ''club'' has a chance.

A big space with about 100 to 200 pinball machines set up.
A membership card/visitors pass.(all pinballs on free play)
A couple of tent/caravan site's and cabin's around it (for people from far away)

Or something like that.