Walk into an aa religious cult meeting and set a bottle (or several of different types...) down on the table. Move them around, pour them in glasses, throw some in the garbage, put some in the coffee (make sure every one knows you did) leave some on the table.... etc.
Oh, here's a good one, make some booze to take. The ultimate in power over alcohol, create it, then destroy it.
This alone will prove people are not powerless over alcohol, but there is more.
Sit down and watch everyone else proving they do indeed have power over alcohol.