Thank you all for your responses. We will be on the Eurodam at dock CT, which is right at the tram.
It sounds like it is not a problem walking to town. There is some information online that it is 1 and1/4 mile from dock CT to downtown but that doesn't sound right to me. (?) It has been some time since we were docked at Juneau.
Years ago, we were docked at AJ on Princess, and it was very difficult walking to town, there were no shuttles at that time.