You can reserve snorkel equipment and tubes in advance. Here's the info right from
DCL's web site.
Snorkel Lagoon Equipment Rental (All day)
Discover species and creatures of the ocean in our environmentally friendly snorkel lagoon. Pick up your gear at Gil's Fins and Boats and make your way to the educational area, where you can learn more about our 12-acre snorkel lagoon. In the water, you can follow the Discover Trail (for beginners) or the Explorer Trail (for more advanced swimmers). Your all-day equipment rental allows you to enter and exit the water as many times as you like. It's a great first-time snorkel experience.
Snorkel, mask, fins and vest included. Children under 13 must be accompanied by an adult.
Adult Price: $25 (ages 10 and above)
Child Price: $10 (ages 5-9)
Float/Tube Rentals (All Day)
Bob in the gently rolling waves on a float or inner tube, available for rent by the day.
Children under 13 years of age must be accompanied by an adult.
Adult Price: $6
Child Price: $6 (ages 5 and above)