fwiw, I think the no smoking in public places (bars, restaurants) is a new national law that went info effect jan 1st 2004.
personaly, cig smoke is the major downer of going to shows for me. I can't stand it. I smoked buts for 15 years at least, and am now one of those obnoxious reformed smoker types.
as for puffin' the ganj, I guess its the same deal for other non smokers, but at least you dont have 100s of people smoking at one given time w/that (at most shows any way) vs. tobacco. That shit just rips my throat to shredds.