The "can" is probably a can of food. It's not uncommon to request this as part of admission, and then the food would be donated to the needy. The only currency that I can find called "EB" is the Ethiopian Birr.

Is it for a bargain shopping or auction event? EB = "early bird" The admission is $1 but you can pay extra $1 to enter the sale during an earlier time for shopping (or pre-bidding) ahead of the normal crowd, getting first pick of the best bargains/items at that sale.