I used my D+ vouchers everyday on Mariner, at JR's for a really good chocolate milkshake (vanilla, chocolate or strawberry available). Made from ice cream on the spot and very, very good. I would get one after 9 PM each night and take it to a show or bar I would go to. Available from noon to 5 PM or 9 PM to 11 PM each day (when they were open). I also could get 50% off ($2.50 off) for milkshakes with a D+ discount, just make sure you are specific which option you want to use. Tip - give your JR waiter a bag of M&Ms as a tip and they will come running to you when they see you!