Yes the water is a bit choppy with a current there. I almost lost a fin while taking them off at the rails. Nice big fish though. My sister hung on to my arm the entire time. When we got out her first response was WOW!, did you see that big fish?
Penny it would also be a good idea if she had a mask and snorkel to get her in the water with them at Seven Mile. I think Carnival has snorkels for purchase for $5 at the Shore Excursion Desk.
Dang!, this is making me want to go to Grand Cayman!