Kevin, I was allowed to play in tournaments at Shooter's as a guest 6 months ago or so. I also checked out Raytown, Sidepockets, and I think the name was Sharky's. All were ok.
Shooters was the best in my opinion. I played 3-4 hours of 3 cushion billiards. Got killed but it was fun considering it was only my second time to play the game. They had diamonds up front and used the measles cue ball. Should be right up your alley!
Seems like I just asked about playing as a guest upon arrival and the gal gained approval from the man behind the curtain and I was in! lol It wasn't that goofy but it was easy to get in.
Ken
p.s. Sorry about missing your call the other day. Was at dinner with the family after getting back from Vegas.