Menus and entertainment will stay the same except if they have a featured performer one week (not a usual thing for Norwegian). You will normally have to leave the ship and do a walk-thru with Customs as a "in transit" passenger on the turnaround day. It depends on the port. You do not have to pack up though. They will provide info and often have a meeting of the b2b cruisers on the last day of the first cruise to go over the process. They make it as seamless as they can.
Donna yes I have the same cabin. My travel agent was able to book it for both. Btw. My old user login was corrupted. After many attempts I ended up having to create a new one and start over. So your chatting with AF1.
Okay. I was referring to cruises from U.S. ports that have B2B cruisers do a 'perp walk' past Customs. You will likely just have to just go to Guest Relations at a designated time and they will de-activate your first cruise card and issue the new one for part 2 of your journey.