I get that that it's not appropriate attire for a hockey game but really who are they hurting? I would much rather look at them than listen to the drunk fat guy behind me spouting obscenities the entire game.
I have no desire to see women in bikinis, but eventually they'll get cold and put something on. The drunken idiot can't be ignored and gets worse as the game goes on.
That said, wearing bikinis to a hockey game is really stupid unless you're having a hot flash.