High-altitude partying is a deeply carved tradition in ski country, where alcohol in the open and illicit drugs in the shadows have been intertwined for years. Even before last week’s town vote here that decriminalized the possession of small amounts of marijuana, one of the best-selling T-shirts at Shirt and Ernie’s on Main Street winked at what it means to live and play 9,600 feet up in the Rockies.

“Dude,” the shirt says, “I think this whole town is high.”

But what the town’s drug ordinance could mean for the local culture and economy, as well as its potential impact on the resort industry if more ski towns go Breckenridge’s way, has become part of the discussion as people scan the skies and wait for snow.