It's weird how many people are angry at this question. I think it's a good, legitimate question. My girlfriend and I found that the higher decks were so empty outside at night, that we could have sex with very little possibility of someone coming by. Of course, you want some possibility. That's the point. But it was really deserted.
Keep in mind, I'm talking about doing things quickly, standing up. That sort of thing. We weren't taking our time out there.