PCMR is the least corporate of the Park City area resorts, but still corporate to an extent. I kinda feel like that's overblown though considering every worker I talk to at every mtn in Utah (except for Brighton and Alta) all complain that their mtn is corporate. PC is an awesome place to be in the winter- the nightlife is sick, you get to meet people and make friends really easily, and on your off days you can pop over to 'Bird/Alta/etc for some bigger terrain.
Working at PCMR, if its the same as Deer Valley (where I worked last winter), means you'll get to ski PCMR, DV, Canyons for free, Brighton for free Mon-Thurs, and steep discounts ($30 or so) at Bird and Alta, then half off Jackson and Sun Valley if you wanna road trip. For those kinda ski benefits I was more than willing to deal with some of the corporate mentality.