Paul, you have a strong and flexible mind, put it to work here to get ready for your birthday party. Here are some of the things I thought about to prepare for a situation like this one. I picture myself being cool and calm with people drinking around me. I picture people raising a glass for a toast. I imagine smelling the wine or rum from the next table. I imagine that tonic and lime or iced tea sitting in front of me. I also imagine the feeling of triumph when the party ends, feeling great and on top of the world, feeling like Godzilla going GRAAAARRRRRRRRRRRH, I did it! I imagine the warm glow of peace and satisfaction waking up fresh, sober, serene and happy the next morning.
Happy Birthday, you lucky sob.