sure ride Stowe, but take your Bachelor Party to Montreal. I've never seen such wildness as in that town.
I second that. I took my brother to Montreal for his batch party. That town ROCKS. Best strip bars anywhere -- and all the girls speak French. We did a three-day strip bar tour, no skiing/riding. Everything from super-nice classy places to shower bars to old converted houses that played porno on big-screen tvs while you got naked lap dances. A night or two of that and you won't care about the snowboarding.
But if you must stay "local," I don't see too many choices other than Killington -- and I hate Killington. Your fiance is right, it is all New Yorkers, but it is the only real party town up here. Stowe is a beautiful resort town, probably the nicest in New England, but it's spendy and, like you said, a long drive.
I don't see Stratton as a honky tonk at all. In fact, it's pretty snotty. Richy kind of place, with not much nearby. You're kind of stuck with their village. This could be a good thing if you don't want to risk a DUI...just hang in the village. Nice bars, you can stumble to any number of rental condos or on-site motels. But there isn't jack shit for non-boarders to do in the off hours. For that, keep driving. Go up to Jay Peak. Best riding in the east and they just opened a huge waterpark and a skating rink. And it not too far from Montreal, either. You could conceivably do some riding and head into the city for a night of strip bars. Good luck with that!