I was lucky enough to go on a dive trip in 2020, before the virus spreading,
Raja Ampat Jan 2020 Trip Report. I think everyone in that trip was fine, even those who came back home in mid February.
So far I only cancelled a ski trip to Salt Lake City in March and rescheduled a dive trip to French Polynesia in May to October. Still have not rescheduled a dive trip to Guadalupe, Mexico in end of July.
If the travel is opening up from July and on and I don't get knock out by this virus (knock on wood), I'll have a dive trip in every month in 2nd half of 2020:
July - Guadalupe, Mexico
August - Jupiter, Florida
September - Cocos, Costa Rica
October - French Polynesia
November - Tiger Beach, Bahamas
December - Raja Ampat, Indonesia