We have returned and there was no issues. Even enjoyed the train from Skagway into Canada. Passports weren't needed since we weren't getting out in Canada, the train just turned around. The train ride was very interesting but a little long. For the more active members in our group they were bored. Disembarking in Canada and a quick bus ride to the airport was hassle free. No going through immigration or customs which was nice.
The group is planning a repeat trip next year since all went smoothly.
And like other posters have said, no Maccallan Quest was on our cruise, such a pity.