Question for my Friends Who Understand Today's Cruises

Ok for any of you who are savvy about how today's giant cruise ships operate and their routes - A friend and her hubby went on a cruise down to Cabo san Lucas, Costa Rica, Panama, and Colombia. They left the 4th which was a couple of days after that one cruise ship was stalled and refused entry because of the Coronavirus outbreak. I was surprised they went and that they didn't just switch trip times to maybe a month or two down the line.

They are scheduled to return the 19th.

Questions: usually that particular route would disembark them in CA, right, perhaps San Diego? And they would need to fly back here, right?

I'm sure they didn't drive there. My worry is whether they will let them come right home from there or whether they'll make them be tested, or even make them wait 14 days before heading back here.

They're both in their 70s and some health issues... I wonder if they even have a clue about what is happening here and how far the restrictions have gone... I still can't believe they went but I wasn't asked my opinion and didn't offer it.