The bride and I B2B last spring on Valor, east carib & then West Carib. We had the same stateroom for both cruises. The last night of the 1st week the the cabin steward left our next weeks S&S cards on the bed with the capers and towel animal.
We were given the option of renewing the shipboard account (re-swipe the credit card) at the purser's desk and stay onboard or out in the terminal at the check in desk. We elected to disembark and spend the day in Miami, I ventured over to South Beach for the art deco architecture and she went shopping. Coming back to the ship we entered through VIP area updated ship board account and immediately embarked by-passing the line for passport checks and S&S photo ID in the attrium/lobby. Although we had the same cabin, we had a different dining table (same dining room, same seating time). The nice thing is the staff knows you, already knew our preferences & likes/dislikes and we got exellent service the 2nd week.
The downside...The entertainment is exactly the same, save one or two single comedy shows. No big deal, you're cruisin.