After browsing the message boards, had a good idea of where I wanted to eat. Unfortunately did not get to two of the destinations (Blue Heaven - too long of a wait, we were leaving and didn't have the time; El Siboney - they were closed at 9pm on a Saturday night).
We did get to A&B Lobster House for dinner. My recomendation would be to avoid it. I had a mixed grill on special - half a lobster, grilled shrimp and scallops. The shrimp were way overcooked, the lobster was drenched in butter. Scallops were good though. My lobster bisque was tasty, but didn't knock my socks off. Overpriced for what it was as well. Service was snooty. Strange for a place that has white table cloths but men in flip flops and tank tops eating at it.
BO's Fish Market was good, ambiance is a big part of the experience here. Had the grilled fish sandwich, wifey had the fried conch sandwich. Both were quite good.
Ate at 1/2 Shell Raw Bar for happy hour. Was going to go to Alonzo's but after the A&B experience, decided I didn't want to go back. The conch ceviche was EXCELLENT. Oysters were very good. 1/2 lb of peel and eats were OK. Happy with the experience overall.
There's a Cuban Coffee stand right by 1/2 Shell that charges <$2 for a great Cuban Coffee. Avoid the coffee shops on Duval, and their $4.75 prices, and try this out. Don't remember the name, sorry. Maybe someone knows the name and can post it, just a small stand.
Ate a decent breakfast at Croissants De France (sorry, I need a spell checker). I didn't hate it.
My highlights were the Cuban Coffee (anywhere) and the 1/2 Shell Conch Ceviche. Also had some decent conch chowder and conch fritters at the AIRPORT!!! Whodathunkit?
I'll go to El Siboney for lunch next time. Was disappointed that they were closed and my wife almost killed me for walking there late at night (maybe 4 - 5 blocks off of Duval, not a well lit street).