I am back from my trip and had no issues making 9am tour. Major Marines starts shuttle at 7am to cruise dock. I walked off before then and walked over to the major marines check in in the 360 hotel. On the the northwestern tour, saw bubble net feeding, puffins, porpoises,otters and more. Great tour.
Took the park connection bus to Anchorage right after to get to the airport. Bus was okay but wasn't the most comfortable.