This excursion has your safety in mind. There is more than enough staff to ensure that everyone is safe above water but when it is your turn to go underwater, everyone has their own personal guide to assist you.
My family and I definitely enjoyed doing something new!
At the same time, those who finished or waiting, you can have a snack (provided) or go snorkel or swim in the ocean water at your leisure.
If you are sensitive to motion sickness, come prepared.