Find Your Cruise
I've not done a Fred but have done a few back to back cruises & I'm sure their system would be the same as others. Yes your clothes stay in the cabin. No you don't enter the queue to reboard & go through security. Just treat your changeover day as you would in any other port stop & go ashore as you wish. If anyone knows different?........
I'm sure it will be but, if I were you, I would give fred. Olsen a ring or send an e-mail to seek confirmation. Have a great trip on a lovely ship.