Panama is an underrated destination in Central America, including the San Blas Islands. This is a popular spot for sailing and boat tours, though there are also some resorts in case you’re looking for a more luxurious stay. Generally, the islands are quite rustic and make for a great off-the-grid island getaway. There are tons of beautiful spots for good sailing, diving, and snorkeling.
Since airline reservation requests are often made by city-pair (such as "show me flights from Chicago to Düsseldorf"), an airline that can codeshare with another airline for a variety of routes might be able to be listed as indeed offering a Chicago–Düsseldorf flight. The passenger is advised however, that airline no. 1 operates the flight from say Chicago to Amsterdam, and airline no. 2 operates the continuing flight (on a different airplane, sometimes from another terminal) to Düsseldorf. Thus the primary rationale for code sharing is to expand one's service offerings in city-pair terms to increase sales.