Oh, boy, I feel bad for you, but trying to do any traveling for many months to come would be a risky proposition. As far as Expedia, you should steer clear of any third-party booking agencies whether it's on line sites such as Expedia, hotel.com, booking.com, etc., or even travel agencies. When you have lots of moving pieces for dive travel, they are incompetent at coming to your rescue to help with rescheduling. It's better when you're in control of your flight, hotel, diving, and you can make the changes needed by contacting the providers directly.
I was in Cozumel in December 2019, and if anyone has forgotten, the Cozumel reefs and marine park are suffering from stony coral tissue loss disease, and it was very evident when I was there. Most of the marine park was closed, so the diving was limited to a handful of sites. I've been there many times and was shocked at the poor condition of the reef that I was able to dive. It's really ugly and I will not be returning for a long time. It used to be so pristine and colorful and it's such a shame that it is dying off. Hopefully, with a break from the cruise ships and tourists, the reef will recover soon.
I was in Cozumel in December 2019, and if anyone has forgotten, the Cozumel reefs and marine park are suffering from stony coral tissue loss disease, and it was very evident when I was there. Most of the marine park was closed, so the diving was limited to a handful of sites. I've been there many times and was shocked at the poor condition of the reef that I was able to dive. It's really ugly and I will not be returning for a long time. It used to be so pristine and colorful and it's such a shame that it is dying off. Hopefully, with a break from the cruise ships and tourists, the reef will recover soon.