Awareness Days are discounts offered by the mountains to all CSC members (Winterset Members with a membership card). You take your Winterset Membership card to the mountain listed on the date listed and get that price for lift tickets that day. Each person buying a ticket needs a membership card to get the discounted price. These tickets are bought the day that you ski - nothing is purchased in advance.
Bulk Buy Vouchers are bought pre-season and turned in for lift tickets at the mountain, there are no specific dates, and no black-out dates for Bulk Buy Vouchers. Bulk Buy Vouchers need to be purchased in advance and are only available for purchase during a very short window in September. Orders and purchases for the Bulk Buy Lift Ticket Vouchers program for the 2018-19 ended in September.
The Awareness Day schedule can be found on the Connecticut Ski Council's website: