You've listed a few options and she's nixed one so get her perspective on what she would embrace. 

Look for other vacation rental platforms, local tourism websites, and industry reports to gather additional data points and validate the numbers provided by AirDNA.4.

More dependent on tourism and local/county/state government; and lack of large-scale high-paying jobs.

Ergo is you do much business these days with nationwide title companies you are probably seeing encrypted e mails be sent to you.. ( use to hate them as I don't like the extra steps to open them) but now I fully understand and embrace it..

The late payments no longer bother me--in fact, I have embraced them.

If the area were destroyed by a hurricane, businesses shut down, tourism industry declined etc., would it even be worth rebuilding those buildings on the same lot or just sell the lot and move on. 

One of the cautions investors have to make around any military installation is being able to accept/embrace the concept of the military clause.

Assuming you are not 'on the river' and maybe a few blocks to 1/2 mile away is going to make all the difference in a rental market where the river drives all the tourism.  

Embrace the suck.

One of the more established areas for tourism is the island of Ambergris Caye.