Yeah, I'd have to think about that, too, John, although it's of course your call to make.
If you were a tourist stranded overseas on a short vacation trip, or an American stranded in a country that was experiencing an extensive outbreak, that would be one thing.
But you more or less have been in a settled "second-home" type situation in Costa Rica if I understand things correctly, where they're not having any extensive outbreak at this point.
This thing spread around the world so rapidly in large part via people traveling in the international air transportation system. I drove to Reno back on 2/18 rather than fly because I didn't trust the virus safety of air transport then, and the stuff hadn't nearly hit the fan yet then in terms of public and official perception here in the US.
And once you get here, they're shutting everything down; and as Bob notes, it's getting harder to find essentials. Part of the uncertainty (speaking for myself not Bob) is how much more draconian curfew, quarantine and/or lockdown measures might be imposed as they try to slow the spread of the virus so that it doesn't overwhelm the health care system like it did in Wuhan and is doing in Italy. So you don't know how long you might be able to go out as "freely" as we can right at the moment to get essentials, what will be available when you do go out, and what viral exposure risk -- or even risk of violence -- you might face when you do go out.
They shut down the freakin' casinos for, at least, 30 days. The casinos, the lifeblood of this state.
So I don't know what the situation is on the ground in Costa Rica -- or what it will be in three months or six months -- but it very well could be better than the situation that you're flying into, along with the risk inherent in the travel itself these days.
So I'm kind of with Viejo on this one, although I'm not in your situation and it's of course your call to make.