There shoudl be toure busses by independent companies directly to the glaveir when you get off of the ship. Walk a little to the left and find a circular parking area. That is where they pickup. The cost is nominal per person and it goes dirctly to the park.
Contrary to rumor, no city bus goes all the way into the park itself.
It is worth seeing - we had a terrific bear sighting there.
I am the editor, but I also speculate, ask questions and play devil's advocate. I reserve the right to change my mind.