Wow, Pam! You did so much in such a short amount of time! When our family of 4 went June 2013, I remember from landing in orlando & throughout the cruise it was soooo hot and humid!!! We are from Southern California, so we aren't used to it!
When we got to Cozumel, I was really looking forward to some shopping. We took the same route as you. My kids were 2 & 6 & they were so miserably hot. Luckily, I was able to get some jewelry for myself and my father. My DH got a couple bottles of some good tequila. We also got a couple shirts for the kids & cool hair clips for DD at Del Sol. My DD was also able to get a couple really cool uniques dolls.
If we ever return, we would do the same. I know what you mean about the vendors. There were quite a few times I would just smile & say no thank you.