Passport is required. Your itinerary will take you through the Gatun locks and into Lake Gatun as well as a port of call in Colon. Either way you look at it it is a Canal cruise
LOL. I know people like you who will believe everything they read on the internet. You have 10 cruises under your belt so you should "be in the know" so to speak. Every ship you've been on had a capacity exceeding 3000pax and up to 6000 pax. Was that a concern for you then?
This is incorrect. Your DSC will not increase. Refer to the T&Cs of the upgrade bid program to further answer the question. The only thing, with 1 exception, that will change is the room. The 1 exception is if booked in a spa suite, the passenger will lose the access portion to the spa.
Just off the Joy. Gold and above were directed to go to the Q restaurant where your latitude status was verified and then an NCL employee escorted us directly to a tender, bypassing the queue via a different hallway. WorkEd well and there zero arguments about joining an already formed queue