Same with Mariners' fans. In fact, they're probably the most polite bunch I've ever run across.
Veto, if you want to see rude you should check out some East coast sporting events. .....and you can start your trip in Philly.
Agree, the Mariners games are attended by polite fans. So far. But now that the "12th man" (institutionalized rude noisy fan effort) has become popularized by the mayor and the media and even credited with helping win the Seahawk's game, I wouldn't be surprised to see Mariners fans jump on the bandwagon.