No idea ...but minimum 2 hours, as I've been to just about every room within that distance.
I would not travel far to play on one. I probably wouldn't play on one even if it's 5 minutes away, because I feel this return-of-10-footers thing is just a passing fad. There's this whole subculture of players on AZB who think pool (all forms of it) is just too easy, as if they run 15-packs routinely and therefore need to add extra challenge so they don't fall asleep. So they hype up bigger tables and smaller pockets, it's almost like they want to make pool sort of a macho straight-shooting pissing contest.
I don't think it would do anything to my game, except frustrate me because I will miss more than I would on a 9ft.