Be sure to bring your camera to capture the spectacular cascades of Tanque Verde Falls. If it's raging, you may be able to feel the mist on your face.
You're spoiled for sightseeing choice when in Vail. Tanque Verde Falls is a great place to start here, but there are numerous other interesting sights to appreciate. Agua Caliente Park, Broadway Trail, and 49er Country Club are not far from the cascade of water and will round out your day nicely.