Sorry, Buck, missed your post as you got "walked on." I haven't been to that area, but have been on Cruise West. If you want further information on that score, feel free to send me a PM. Also, there is at least one review in cruisereviews.com about this ship.
Costa Rica has a lot of variety - not just beaches, but volcanoes, jungles, etc. If you are adventurous, you could consider doing a treetop tour; river rafting is also a possibility there. And it's one of the world's top spots for birding.