The game is great so far, I can't wait for more content in the future. I did notice the exit in the bowling alley, but I see no more yellow objects in the PDA. Am I to assume this exit isn't usable in the current build of the game?
It is usable, you would need a key from the one of the arcade prizes (you'll need tickets for it) and you should be able to exit out of the club through the bowling alley.