The hotel offers many activities to enjoy like Gym, beach-volleyball court RiuFit, group fitness activities (six times a week) Sauna, steam bath and whirlpool bath Small catamaran, kayaking, body board Check the website for more info!
If you are looking for something outside the resort you can purchase excursions through Vallarta Adventures. There are also reps in the lobby of the resort that can set up excursions after you arrive but prebook excursions to save money!