Hola from Sunny Mexico. It´s about 34 degrees here and very very humid. I spent all of yesterday walking over the ruins of Chichen Itza. They were huge and amazing. There were several temples, a few ball courts, a maze of 1000 colonades (there were only 600 really), a cenote (big hole in the ground where water comes through) and various other bits and pieces. It was amazing!
The food is great here, and cheap. So far I haven´t picked up any nasty stomach bugs. A few of the others on my tour have though. There are 8 of us, plus the guide.
In response to your questions, my bag turned up the next morning, right before I flew out to Cancun. It was largely in one piece, with only one minor breakage.
And no, I didn´t use the denture cream. I took it back and swapped it for real toothpaste. After 24 hours on a plane, the first thing I wanted to do was brush my teeth.