We've done a one-night itinerary before, on Princess, and as Seattleites, love the fun and flexibility of just one night away. We were sorely disappointed on this itinerary and felt like it was an afterthought, not treated like a real cruise.
Overall, the ship was an odd ghost town. Most bars were closed. When we got to the pool finally (around 7pm) there was just one other family up on deck. We didn't see entertainment people the whole time. The one live music we saw, in the lounge at 10pm, was sparsely attended and odd. The staff said there were two shows in the theatre but there was just one, which we missed due to a slow dinner. Everything seemed picked up and like our time onboard was a hiccup before the real cruise started.
First, due to a six-hour Amtrak delay, we weren't even sure we'd make the boat. More than an hour on hold with NCL and they said 'someone from the port will call you,' though nobody ever did. We weren't sure if we were going to Vancouver just to miss the ship, and nobody could tell us whether the ship could/would hold.
It was fine. The bathroom - with separate sliding doors for toilet and roomy shower stall - was quite nice.