Please look for and post on existing COVID-19 threads before posting a new one.
FWIW travel changes have previously grandfathered those with travel already booked. No date on the travel changes yet, but the other change are in effect May 2. If you can still do it, it might be worth purchasing 'cancel for any reason' insurance. My worst case is they change the port instead and it turns into a generic bahamas cruise. I paid a lot more to go to Cuba.