Things to do in Isabela, PR

Tropical Trail Rides: horseback riding next to the hotel, take a ride along caves, beach, & mountains: http://www.tropicaltrailrides.com/
SeaTime Adventures: food, drink, and transportation included, toy rental for water & land activities, including ATV rental, bioluminescent lagoon roberto@seatimeadventurespr.com, http://www.seatimeadventurespr.com/
Aquatica: paddle-boarding, surfing, diving, etc – and can send instructors to hotel for group classes at the beach: info@aquaticapr.com / www.aquaticapr.com
On-Site: 1 tennis court, 1 gym, 2 restaurants, 2 pools, and a very large beach - also lend bicycles and snorkeling equipment!
Golfing: there are two nearby golf courses (10 minutes away from the resort)
1. Punta Borinquen Golfing:http://www.puntaborinquengolf.com/
2. Royal Isabela: http://www.royalisabela.com/golf-links/golf-links.php
Kayaking
Canyoneering & zip lining in the tropical rain forest, jungle ravines and rivers
Fishing
run on 3 miles of the pristine beach