You arrive at the party. Music is playing loudly. People seem to be performing some sort of Greek theatre. You're unfamiliar with the play, although, judging from the degree of audience participation, it definitely isn't Aristophanes' Lysistrata. In one corner, you see what appears to be a hot-tub. In another, a clump of high-spirited lovers of life. The clump is emitting smoke. And, in the the center of the room, occupying most of your field of view, is a large silver barrel, with very many people gathered around it. It all looks very interesting. What do you do?

Go see what the hot-tubbers are up to

Investigate the source of the smoke

Check out the barrel