"I know who you really are,” you call out to them, “you're all lizard people!" You get worried looks in return but, like, worried-about-you looks, not you-figured-us-out looks. On second thought, maybe they're not actually lizard people and you just had a really long and confusing night. That's also definitely a possibility. But hey, that seemed to work as an icebreaker and now they're offering to either walk you back to your tent, or take you out to party with them.