I was just there for Brunch on the 21st and the server did allow us to get a Bloody Mary in addition to the Mimosas on the plan. I'm not sure if he was just being nice because the exchange went like this: Me: I'm assuming the Mimosa counts for the included alcoholic beverage on the plan. Him: Yes, or you can get a Bloody Mary, whatever.
I'm thinking he wasn't just being nice though because the Bloody Mary was on the bill and "comped" by the dining plan. YMMV