Sailing in San Blas is great - just search the web for it and you will
find people who organize this. Should be roughly $150-200 pp and day
(with 3 day min).

Decameron and Playa Blanca are great places to relax and eat til you
drop. Just make sure to book well in advance.

Bocas del Toro is nice to visit as well, but I would not spend more
than 2 days there since it is quite small.

Gamboa and the locks you can do before noon in one day.

Best wishes, Marcus
http://tomopt.com/