We enjoyed seeing the dolphins, and riding the waves.
I misread the information, and thought we were staying in the intercostal waterway. They took us through it, and out to open ocean near Myrtle Beach. It was windy that day, and the waves we hit splashed up on the passengers. Some people got soaked. Don't bring your "nice" purse, hat, sunglasses, unless you are ok with the ocean water getting all over them.
Also, I did not have any seasickness until we stopped to see the dolphins. The ocean waves made me seasick.
Advice: wear sunscreen, hat, and maybe a rain poncho.
One last thing, the crew indicated where the life jackets were incase of emergency, but with nearly 100 passengers, should the boat have major trouble, I think it'd be better to pass them out as a requirement for the ride.