I've been to Miami twice. Eveyone there seems fine with me, as long as I was giving them a tip. And only then did their face light up -- almost as though they had just put on a different personality.
One of my strongest memories there wasn't with the people, but with trying to get out of the place in a Mustang GT I rented from Hertz. I was just following a sat-nav I brought along with me, which seemed to have me enter a 5 lane motorway (or something), 5 or 6 lanes each side, and within a hundred yards wanted me to move over, crossing several lanes of heavy traffic, and exit on the opposite side. It all seemed like a very strange road layout..
I couldn't get over in time due to the heavy traffic, so the sat-nav kept taking me off at the next convenient exit so i could come around and have another go. This happend several times, to the point where I thought, what the hell am i doing wrong! It was like a scene from National Lampoon European Vacation, only the other way around. I thought I was going to be like this for hours until the traffic died down.