We just completed a cruise on Radiance from Seward to Vancouver a little over a week ago. We booked the train from Anchorage to Seward through our travel agent. To get from our hotel to the train depot we took an Uber. There is an area at the depot to drop off your luggage, which will then appear at your stateroom on the ship. To get from the depot in Seward to the cruise ship, there is a free shuttle, or it's a quick 10 minute walk if you don't have any carryon baggage.