I have skied A-Basin, Breckenridge and Keystone this season. Keystone had....by far, the worst behaviors on-slope. The patrol at Keystone seemed to do very little to moderate the actions of the "yahoos." Hope I'm not offending anyone, but my observation is they hung in clumps at the gates, slowing people down a bit at the very bottom, but doing little else.
Breckenridge was wonderful - crowded, yes, but people were quite considerate in the main. Patrol could be seen everywhere, skiing fast and slow, not killing the fun, but having a moderating effect. A-Basin, not so bad either. Don't know what it is about Keystone that brings out the worst.
We had quite a lively argument about it all on the Keystone Facebook page. Some of the posters (young male borders, almost exclusively) were quite ugly about it - basically said they owned the slopes and the less skilled riders should just get the hell out of Dodge. When I pointed out that in early season the limited terrain must be shared between the various levels of riders....(very politely and reasonably, I might add), I've was bombarded with the nastiest posts I have ever received. One guy said, "You have white hair, LOL, shut up bitch." Funny, because I actually have two-toned hair - white on top, black on the bottom and it costs me a small fortune to get this look.
This seems to be the clientele that Keystone is directly or indirectly encouraging.