I have never stayed at an all-inclusive in Boca Chica however I have been to the Coral Hamaca to watch their nightly shows and also to their disco and it seems pretty nice. I believe there are only 3 all-inclusives in Boca Chica and the Coral Hamaca is the nicest one. You should check out both the Boca Chica website and Debbie's Dominican website to read up on trip reports.
http://www.bocachicabeach.net/
http://www.debbiesdominicantravel.com