I'm in California and I couldn't tell you for sure but if they have a liquor license I don't think they can be open 24 here, even if they stop pouring at curfew (2AM).
I see you're in Texas. Rusty's in Arlington is open 24 hours. Can't remember, but I think they have 4 or 5(?) 9' GC's, a bunch of oversized 8's and 1 barbox.
Maniac (been in too many places to remember details :sorry