I'm not sure if you already read through the protocols on NCL's Sail Safe page and still had the same questions but I found this to be reassuring for my comfort level. https://www.ncl.com/sail-safe?intcmp=pdt_sl_SAILSAFEVAC
If one person in our party tests positive, will we all be denied boarding? Will the Company assist with travel arrangements?
If one person in the party tests positive for COVID-19, immediate family members, those traveling in the same cabin as the guest who tested positive and those identified as a close contact will be denied boarding.
If you are denied boarding due to a positive COVID-19 test at embarkation, the cruise line will coordinate and cover costs for travel arrangements, for you and those traveling with you if they are also denied boarding.
Are guests required to wear masks while onboard?
Our cruises will operate with 100% vaccination of guests and crew through 10/31/21, therefore face coverings are not required for cruises prior to 10/31/21. On Europe sailings only, local government regulations requires all guests to wear masks onboard while indoors except for when actively eating or drinking or when in their stateroom.