I would hope that they will allow the Rapid test, which is Viral from what I have read. If they allow that then results with in an hour are common, just had two friends test at the PDX airport to fly to Hawaii and they got their results back in under an hour. The cost was about $130 with proof of upcoming travel. I see that in San Jose Del Cabo the rapid test is under $50, that is our next destination. My assumption is that SXM could do the same, again assuming the rapid will be acceptable.

What I also read on the rapid however is that it has a high rate of "false positive" results, like 20% range.

We are not cancelling our April trip to SXM, and I have to believe that somehow this is going to work out and not crush travel. Think Positive, but don't become positive.
Cheers from the mighty Pacific NW !