Our background: DH and I have cruised 4 times previously, once on NCL. I have limited mobility, so some of my comments reflect that situation. We didn't have an HC cabin, as I can get around short distances, just not long ones.
We flew into Boston the day before embarkation and stayed at Embassy Suites, Logan Airport. Since all we wanted was a restaurant and a place to sleep, it was an excellent choice. The free breakfast buffet was a plus. The minute we stepped off the elevator the day of the cruise, we were asked if we wanted a taxi to Black Falcon, so they must get a lot of pre-cruise business.
Hoping for an early boarding, DH and I arrived at Black Falcon at 11:00 am. for our 7 day Canada / New England cruise going from Boston to Quebec. Dropping off our luggage was quick and easy, but then we had to join an unmoving line snaking around the entrance. At 11:30, NCL representatives came around explaining that the Coast Guard had arrived for a surprise security check. No one could be admitted until the Coast Guard released them. Around 12:15 they finally started embarkation. NCL did a good job of keeping us informed about the situation.
Across from crew space, but still quiet.