It's not just Mexico. I have Platinum rewards with Marriott, and their "enhanced" high speed wifi is trash in a lot of hotels even expensive newer ones. I'm glad the WiFi is improved. It really wasn't worth the money you had to pay for it pre-remodel. It's nice to get away from everything in MX, but it's also hard to be completely away for a week.
Agreed. A long time ago, I gave up the idea of being completely away from it all for a week. I relax a lot better just "touching base" through email a couple of times a day.