More of an "Am I being ridiculous" rather than AIBU...
We have been invited to a wedding in Edinburgh over the winter and need to start booking travel for it from the West Country (near Bristol). I have a grand romantic idea that this would be a really lovely journey to make on the train - kick back, eat lots of snacks and watch beautiful countryside and interesting cities as we swoosh past.
I've just looked into travel costs though and its considerably cheaper to fly rather than travel by train, and also takes a fraction of the time. I'm now wondering whether I'm just being a bit ridiculous to even think about spending MORE money for a longer journey? I'm also starting to have visions of endless journeys, train delays and uncomfortable seats... 
It would just be me and my fiancé; no children.
Has anyone else done this (or a similar) journey? What would you guys do?
Oh, and if you've made it this far then tips on what to see when we're in Edinburgh would be great!