Buy your ski passes early (the first half of September is the very best time to get the cheapest deals but they are still available at the resorts if you act SOON!) For example, as an adult I got a weekday seasons pass at Brighton Ski Resort for $340, which means I can ski every Monday – Thursday of the season, except Holidays, including night skiing.
Mid week ski deals are the best PLUS you avoid the headache of heavy traffic getting up to the resorts on weekends.
Ski in the evening at participating resorts
Ski Rental Shops always have discount daily ski passes.