Hello, I visit PR frequently, my father was the #1 collector/dealer of PR chips. I have a house there, so I have no need for hotels, but based on the description of what you are looking, I suggest The Courtyard By Marriott in Isla Verde, just a couple of minutes from the airport, and right within Isla Verde, Condado, Ocean Park, Luquillo and Piņones. Check their website.
http://www.sjcourtyard.com/entertainment.php
They have a good casino, Casino Del Sol, as for attire, things have relaxed a lot, no need to have a jacket anymore. Send me an email and I can give you other details. I'm going back again end of the month (09/29-10/02) maybe we can get together over there.
