Well, it finally happened to me. My trip to Cocos on Argo, starting tomorrow, got cancelled due to the trip that just got back had someone test positive for covid. So, the entire crew is on quarantine by the order of the Costa Rica's Ministry of Health. They are unable to run the next couple of trips (including mine) due to the quarantine.
Underseahunter.com gave me 2 options:
1. A full refund
2. Reschedule with no increase in price that I have paid, plus free $1500 cash for me when I arrive in Costa Rica.
I chose option 1. So far, I lost $100 penalty for cancelling my flights, which is not covered by DiveAssure travel insurance policy.