The other major benefit is that if there were to be a major thing on the highway
DCL has you covered. With the car rental we always give ourselves an extreme amount of extra time.
THIS!
It was not Disney (since Disney doesn’t sail out of Anchorage/Seward in Alaska), but my Soithbound RCCL cruise was out of Seward. The cruise line offers transportation via a train or busses. I opted for the less expensive bus. Enough in our running group did we had our own bus. There is ONE road between Anchorage and Seward.
We got to the port and got on. It was not until dinner when people in our group who had taken the train got there - because there was a car wreck that shut down the road completely, so RCCL had the train stop and moved as many from busses as they could into the train.
There were busses that had not left Anchorage and were held until the road opened up.
The captain made the decision to do muster between the dinner seatings for those of us on board, then did a muster in the auditorium for those who had still not arrived after the final bus did. (He would have been well within his rights to hold off doing it for everyone until then, but chose to split it. We finally pulled out around 3am.
When we stopped in Icy Strait Point, I was on a shuttle to Houna to see the big eagle nest and got to talking with a couple who had been on private transportation that day. Their driver managed to get in front of the final bus, and they pulled in just before it. As the final bus pulled in, the port staff closed the gates. Anyone after that final bus was finding their way to the next port.
So yeah - any time I’m having to travel a distance from the airport to the port, I make sure that I get cruise line transportation to it.