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.
Princess Cruises - Caribbean Princess - 07 Sept 18 - 12nts
Fly Uk to Fort Lauderdale (Overnight in Miami) : Princes Cays (Bahamas) : St. Thomas (U.S Virgin Islands) : St. Kitts : St. Lucia : Antigua : St. Maarten : Fort Lauderdale : Fly UK
Now from £985pp
Royal Caribbean - Navigator of the Seas - 9 Jul 18 - 13nts
Southampton : Gibraltar : Alicante : Palma de Mallorca : Sardinia (Cagliari) : Seville (Cadiz) : Lisbon : Southampton
Now from £1839pp for a Junior Suite!
P&O Cruises - Britannia - 29 Mar 2019 - 7nts
Southampton : Rotterdam (Overnight) : Bruges (Zeebrugge) : St Peter Port : Southampton
Now from £437pp