Lisa, I know that this it meant for Nancy but I booked this excursion through cozumel insiders and they explained the following to me:
of course, the royal swim was 1 hour;
and after the swim you were lead to a
room to view a video and pictures. The
viewing for the video would take 20-30
minutes and of course time to select your
Therefore, your royal swim would start at 2:00pm and end at about 3:30pm. I hope this helps.
Have a great time on your cruise !! We do not sail until March (can't wait).