There is not a DJ at the pool but I do recall hearing music. There may be a DJ when there are convention events going on but then the pool is usually closed to resort guests (usually just a few hours).
Not sure about the AP discount on Swan boat rentals. I know it's not in my AP booklet, so not really sure that there is a discount for that offered for the Swan boats. (we couldn't get an AP rate on the surrey bike rentals at the BW)