"This is my story, sad but true..."
Four of us signed up for, and prepaid $110 pp, "Tehuacalco Archaeological ruins and Country Side Tour WITH INCLUSIONS" from San Juan del Sur.
Alas, the morning of our ship's arrival at the port the weather was against us. The captain decided that it was unsafe to try to put passengers ashore in tenders and scrubbed the visit.
We so notified Nica-adventures.
A couple of weeks later, we were told that they would give us each $14 to make up for not having lunch and an admission to something.
I do not expect the tour company to be out-of-pocket for expenses associated with their preparing for our visit. They did send a van 130 km from Managua to meet us, and I have no concern about paying a total of $75 US for the trip. (The FedGov allows 56 cents/mile deduction for use of a vehicle).
I do strongly object to paying them $380 for doing nothing.
I hope that this note helps others avoid a similar problem.