You won't need transport for this one! Watch the surprise half way up when the train stops, you can get off and observe, it's a nice touch. Wouldn't fancy the job myself!!!
Just walk off the ship and up the pier to the station, 200 yards? Certainly not far. Enjoy, it is lovely.
I think they did oap rates as well.
As with the other commennts it is not far to the railway, but i would recommend pre-booking tickets fot the railway journey.My family and i were there in july 08 on the grand princess and missed put for not doing so!.you can buy tickets from the station itself but it can get packed with coach tour parties which leaves you with limited availability and train times. hope this helps .
Try this link http://www.flaamsbana.no/eng/Index.html for more information on the railway, plus there is a webcam which shows how far the station is from the cruise berth.