Congratulations, the Moon Palace is a stunning property!
If you are looking to get married on Valentine's Day I would suggest trying to go through their Miami office to see if there is anything you can do to expedite that request. We have found Valentine's Day to be one of the most coveted days of the year, next to number combinations like 11/11/11.
It sounds like you've already gone through a lot of stress! A destination wedding will certainly be easier.
I always recommend to brides to let their TA do a lot of the work for them, especially when it comes to your guests. We encounter guests worried about the safety of Mexico all the time (as well as fear of flying, fear of getting sick locally, fear of the unknown, you name it!) and have pretty much mastered the process of relieving them of that worry. I'm sure your TA will be the same.
Hope that helps and good luck!
Ginger @Blue Petal