My thoughts on why it’s not a big deal to get a test on arrival if that allows one to travel to the Caymans to dive:
- It’s not yet proven that being vaccinated means that you can’t be a carrier - and no vaccine is 100% effective.
- There is an incubation period, so a single test a few hours (it’s actually usually up to 3 days/72 hours so it is more than a “few hours”) before boarding a plane does not necessarily mean you might not be infected if the exposure was very recent.
- Again, no vaccine is 100% effective and I have not seen a proposal where ALL Cayman residents would be vaccinated prior to border opening - just the most vulnerable.
So I really don’t see the issue with Cayman requiring a test on arrival. I’m actually surprised they don’t require a test 4 or 5 days after arrival like in French Polynesia.
If one is confident they they are not bringing COVID in as you seem to be suggesting, then what’s the concern with getting a confirmatory test in arrival?
Also, I would also expect the travelers would pay for the test - after all, they are the one’s who want to enter and are presenting the risk. Cayman is not a cheap destination, so paying for a test should not be a big deal in my opinion.
In the end, it’s also their country and their rules. If you want to visit, you have to comply - it doesn’t mean you have to agree with their approach. Otherwise, just go somewhere else that has entry requirements that match up with what you are willing to deal with.
Just my view on this - not a big deal for me.