Hi all, Im looking for some help its our first cruise and we want to swim with dolphins and do the mayan ruins tour in Cozumel. Problem is we cannot book them both through Disney as the timings do not allow. So I have a few questions if any of you loveley people would mind helping!? 1) How does the time difference work? Does the cruise ships timings run on EST or CT? 2) If I'm booked on a port excursion from 8.45am - 1pm, is guaranteed I will be back at port by 1pm or should I allow an extra hour? 3) The timings currently showing up are (CT) 1.20pm, 2.05pm, 2.50pm, 3.35pm. I have to be back at port by 5.45pm, which would you reccomend 4) How long does the swim programme last at Cozumel? 5) Is this too bigger risk!? 6) Anyone else done this? Sorry for so many questions any help at all will be muchly appreciated!!