Oh, I definitely think it'll have an effect.
See this article:http://industryreport.mountainnews.c...n_out_of.shtml
It's fairly skimpy on details, but does address a few things.
I think the biggest problem will be the higher airline costs. Have you looked at airfares recently? They're getting pretty hefty. That tends to translate directly into lower group business. I really don't think it'll affect day trippers at all - higher gas prices really haven't seemed to lead to less driving, just more bitching about gas prices.
And really it comes down to snow, despite what the marketing departments would like to believe. Have a good snow year, and revenue will be up and it's as simple as that.
(I feel sorry for your pass folks - installment plans on passes are nothing but a bunch of headaches.)