I was thinking of hosting a guild anniversary party full of drunken revelry inside the Grim Guzzler. Is it at all possible to enter Blackrock Depths with more than just five people? I remember in the old days instances would let you in but no loot would be available. Unlikely, but just thought I would ask.
If it isn't possible, any recommendations for other 'bar' type locations throughout Azeroth that may work outside of the major cities?
I'm not sure bout brd but a good alternative would be the bar in shattrath. I know you said out of major cities but it's somewhat empty and even has entertainment in the form of a band or comedian :P