Excursion Timing

I was looking to book a Grand Cayman private company excursion with Stingray Sailing. Their excursion runs from 11:30 - 4:00 LOCAL time. the Disney website says the ship will be in port from 10:30 - 5:30 ship time. I am not willing to take any risk. Will this work ok or do I need to be nervous? Thanks in advance for your help!

Grand Cayman is one of the ports where ship time is not always the same as local time. I would suggest that you confer with either DCL or the excursion company. They KNOW the ship schedules--their income depends on it.

The last tender will depart 30 minutes before all aboard time. SO, if your excursion ends at 5:00 ship time, I'd worry....I'd want to be in line at the tender port no later than 4:45.