When did i ever say i was against Weed? I just don't think Paul Allen is going to sell it at his Stadium and i doubt the Mariners would either.
Also as others mentioned Smoking is banned and the main reason for that is most likely they don't want Non-Smokers breathing that crud in.
With Beer your only hurting yourself by just you consuming it and unless you drink a lot of it i doubt your going to get drunk unless your trying to get drunk.