We took the 12 day escorted land-sea cruise tour of Alaska. Our ship was the Diamond Princess.
First the Pros:
The Diamond Princess is a clean, well-maintained and roomy ship. crew is friendly and helpful.
The scenery on both the land and sea parts is beautiful...awesome is a better word.
We saw some animals of each of the Alaskan species..bear, moose, caribou, sea otters, whales, eagles, mountain sheep etc. But not many, usually they were in groups of 1-3.
Food throughout the tour was excellent.
The escorted tour includes almost all of the meals, and is well worth the additional cost from that aspect alone.
We took the Skagway train, Devils Canyon jet boat, Denali tundra tour, whale watching, zip line and Ketchican Duck for excursions. All were excellent and fun.
The disembarking process at the end of the sea cruise was very efficient.
The land tour escort was sometimes not present at key times (like when boarding a bus for excursions) and since the escorted tour had sometimes different transportation, it was frustrating to try to figure out where we were supposed to be.
In a related issue, we often received 2 differing sets of instructions for the land tour.
The first night on the ship, we went to the buffet and found old and tired lettuce in the salad bowls. When this was pointed out to the chef, he had the bowls changed. But they should have not even put this salad out.
There we no hand sanitizers at the entrances to the dining areas, with the exception of the buffet and the fast food areas.
The ship is very commercial. Lots of sales, jewelry, art work. It was sometimes hard to get from place to place because the vendors tied up the passage space so that you were forced to funnel past their wares.
Especially annoying were the on-board photographers who actually forced long lines when we were disembarking for the ports, so that everyone had to get a picture taken, whether they wanted to or not.
I have been on many land and sea tours, so on a comparative basis, I would rate Princess as good, but not excellent.
In my opinion, Viking is the best, followed closely by Celebrity.