Tim, as a guy who has marshalled literally thousands of airplanes, I can attest to what you said. Not only is it extremely annoying, and sometimes literally painful, it also makes it almost impossible to see your wingtips. Leaving the strobes on isn't quite the same safety issue, but I guarantee the ramp guys are going to be rolling their eyes. The worst for me, personally, is marshalling out a night departure with wands, and instead of flashing the taxi light when they're ready to go, a crew will nail you in the eyes with every light on the airplane. That would be a bad time to have a lip reader for a crew member!
Tim, I'm afraid you are incorrect. 727-200 doors are very different from the 737's doors. I've literally loaded thousands of each. And the 727-200 out of MEM was not Fed Ex. It was a passenger carrier.
After closing a 737 cargo door, a wise ramper should always give it a good push to make sure it's locked closed. It is possible for the door to appear closed and not actually be locked down. Back in the 90's, a major carrier had one of their 727-200's take off out of MEM with the rear cargo door open, and the support bar locked in place. Now that one you could've seen from your window, but not on a 737. The 727 came back around and landed safely, and several people had some explaining to do, crew and ramp guys!
Most UPS airplanes sit during the day, and they never carry full fuel unless the length of the individual flight requires it. They also need to carry as much freight as possible, and carrying around large amounts of fuel would cut into that.
Let's see, you didn't read the NOTAMs about FLL, you didn't have the forms you're supposed to have when flying internationally, and you didn't bother finding out about the landing and GAFIS fees before flying into FLL. But everyone else was rude, because they had to stop what they were doing to back you up because of your piss poor flight preparation. Get your own shit together before making judgements about how you're being treated.