We had high hopes for this cruise. From Tokyo to Seattle! Alaska is gorgeous! Unfortunately when all was said and done it was really "just OK".
I won't review NCL specifically here other than to say that since we first sailed NCL 5 years ago we have noticed a steady decline in quality and amenities. Their "chocolate night" is gone. The quality of the food is noticeably lower. Etc. From other cruisers I've spoken with this is not unique to NCL (HAL has been mentioned a few times by people I know). But we sailed NCL, and so that's what I will criticize.
The crew was fine. That has been the one constant in all our NCL cruises. They are friendly, helpful, and just generally really nice. No complaints there at all.
That said, there were significant organizational problems with disembarking in several ports. In Petropavlosk, for example, we missed our excursion because getting off the ship took over four hours. I knew someone who claims he saw what the problem was, but I won't resort to hearsay since I didn't witness it myself. I will just say there is no excuse for those sorts of delays, and the organizing of the disembarking was a mess. It wasn't as bad in most of the other ports, though Seattle was a nightmare. Again, poor organizing caused us to have a drastically shortened tour of Seattle. We were supposed to see Pike Street and some other locations, but all we had time to do was the Space Needle. No refund, or even partial refund or ship credit, was offered for either of those fiascoes which were THEIR FAULT.
The food was very mediocre. Some of it was downright bad. Their eggs Benedict was raw. Not just once, but each of the three or four times we checked it out. A runny yoke is expected, but most of the white was runny too. That's not right. There was a variety of dishes available, but the seasoning was almost always very mild. Mild to the point that you couldn't really tell it was seasoned many times. Even in the premium restaurants (which we ate a few times). All in all, unacceptable.
I can't pin this only on the Jewel, or this cruise. As I said, we've sailed NCL several times over the past five years, several different ships, and we've noted the steady decline in food quality with each successive cruise.
Unless something changed we probably would not do this sort of itinerary on NCL again.