Just back from Norway and took no currency. Only place you could not use a card was on the bus in Tromso, but I bought my ticket with a card in a shop.
I can only echo the sentiments above. I have been holidaying solo for 20 years. Cruising is the best for solos (have done more than 70) and have found the smaller ships to be the most friendly and sociable. Go for it and you will have no regrets. Happy cruising!
Lots to see within walking distance of ship. If you have been there before, I can recommend the Stavanger countryside trip. Very interesting, covers everything and good value. Fjord boat trip not worth it if you are cruising in the fjords anyway!
Britannia used to have a good selection of films on the cabin TV. Don't know if they still do as I did not look last time. Have seen latest releases in the theatre though.
Have stayed at Holiday Inn over 50 times with no problem. Mind you, my car is not worth nicking (and there are always lots of more expensive vehicles there)!
Lots queueing at 5.30 for freedom opening at 6. Think they may be after tables for two, of which there are not many. I always dine fixed at 8. No queues! Fixed times on Aurora were 6 and 8.