In reply to Pepper:
Thanks for your reply, and your time and trouble, and yes, your information is of use.
If I may ask, re the bridges... when you refer to them being in bad nick, can you elaborate? Could you use them? My map, rather usefully, differentiates between all year round (H) and summer only (S) bridges, but any information would be most welcome.
I am a member of the DNT and so I'm on it when it comes to which huts are open and closed but thank you. Getting hold of a key is the plan, although I think, in this area at least, you collect them from the guardian in a managed hut. Only that I will be there a week or two before any are manned... but I can't be the only one in this predicament and so I assume they will offer a solution.
I have never in my life matched a map or guidebook time (with the exception of the approach time to that layby buttress on Gardom's, and I wasn't driving) and don't intend to pay heed now...
Good tips about the hostel and hotel, thanks. I will look them up if I need to.
Re the ferry... I will catch the train to Geilo, then use the bus along the E7. I wasn't expecting a ferry or Utne... unless I've missed something? A book is my one luxury item.
Thanks again,
Jim