Mandalay Bay wouldn't even let me walk into their pool area to check it out, and I was dressed in khakis ... no swimsuit/sandals in sight! They didn't even blink when I mentioned I was on a scouting trip for a Bachelor Party in a few months. No Dice.

At the Mirage (my second favorite pool) I legitimately needed to meet some friends poolside after checking out (thus no key). They let me by with only a little hassle.