We just got back a week ago. Most of the time, we told the servers we were on the DP. This was our second year on the plan, and it really is wonderful. Last year, we forgot to tell our servers once or twice; and the servers just asked if we were on any plan. This year, we totally forgot at one TS, and the server forgot to ask as well. The bill was brought, and I just handed him the card, apologizing for not mentioning it b4hand. He was absolutely fine with it.
Have a great time, and enjoy all of that delicious food!!