Yes there is a lot of diving, scuba, and snorkeling in Puerto Vallarta. There are companies that offer these tours. If you are living in Puerto Vallarta, these water activities would be easy for you to do. 
There is a wide variety of restaurants in Bocas Del Toro. There are restaurants that serve local food, which is basic Panamanian fare and for around US $4 to $5 for lunch or dinner. There are also some very nice restaurants here in Bocas Del Toro, where an entrée might be $18 for a lobster and really good hors d’oeuvres for around $1. The prices are still very reasonable. 
The best advice I can give about living overseas or retiring abroad is, if you want things to be like the way they are at home, then do not leave home. 
In my opinion, one of the best places to live and retire is in Portugal is Cascais. Cascais is just half an hour away from Lisbon, which is the capital of Portugal. Within a radius of 50 kilometers (about 31 miles) from Cascais, you will find beaches, golf courses, castles, top class clinics, international schools, etc. You have everything that you need and want within a radius of 50 kilometers.My New Mayan Friend, and the Evolution of Merida, Mexico
My new Mayan friend had a beautific smile. Most likely in her 50s, I met her as she and her family were making and selling sandwiches from the very small porch in front of her home with the half wall she used as a built-in shelf. On the street was a solitary plastic table covered by a plastic tablecloth, with two plastic chairs.The street of my friend’s house was perpendicular to the main street bordering the hacienda in which we had rented a place to stay. ...