Snoopy's is definitely a legend, but the place next to it has a better veriety of non-fried seafood. If you're looking for a place in Port A, I recently was there with a buddy and we went to the restaurant next to the mexican food place and they had outstanding seafood. Sorry I can't remember the specific names of the places, but if you are exiting from the ferry, take a right and the two restaurants will be on your right just down the block. Both have good menus, depending on if you're interested in mexican food or seafood. The amberjack sauteed in butter and garlic was unbelievably good. Bring your appetite too if you order the full size plate instead of the half order. I had all I could handle with the half plate and I can usually put it away!
Enjoy Port A and send back a fishing report.