I was visiting a college town for an away football game. This was the night before the game and some of my friends and I went out. I met these two guys at a college bar my friends and I went to. My friends were going back to our hotel but these guys (who we had all met maybe an hour before) had invited me to a party. It was still fairly early and I thought "Neat, this will be a different and interesting experience". Unfortunately it was - much more than I had imagined.
It's likely that if the circumstances were closer to what you've described the police would have taken me more seriously.
I should also probably add that this was in a period of my life where I was unknowingly experiencing untreated bipolar disorder. If you're not familiar with manic or even hypomanic episodes your risk assessment can be very warped. That was a large component of this situation.