Besides a day cruise, I've never actually been on a real cruise, so I don't know how hard it is to stay on time?
But this couple was 45 minutes late returning to the ship after an excursion...and the cruise left them behind.
According to the story, there's no repercussions to the cruise line for this since it's in the contract you sign.
And if you ARE left, all responsibility is on YOU to find your way back!
That alone would make me wanna get back early to make sure they don't leave me!!