Disney did have this same offer last year except it was in the Caribbean. They sell out very quickly. Anytime you see Disney discount anything you better grab it fast.
F-Mattox. I've been on Disney three times. The adult pool is a nice area with a bar. My first time on Disney I didn't realize we were so close by the horn. One loud blast and then it goes into "When you wish upon a star." Very unique. The adult restaurant does have a nominal surcharge. The whole rotating dining rooms plan is fun though.