Sorry to be a grumpy-bum here, but I didn't like the L&HR at all.
Very good at what it does (namely, shipping tourists to the boat to visit Windermere), but from an enthusiast's point of view I found it utterly rubbish, and somehow the slowest line of any gauge I've ever ridden on too, presumably an intentional decision to let punters "get their money's worth"! The boat ride made up for it, I guess, but I got the feeling it's treated as a purely commercial operation where, to misquote Jason Donovan, "Any Steam Will Do!"
The Fairburns are wasted there - if you're going to pootle along at 5mph in a packed carriage full of tourists who don't particularly care about the motive power, you may as well just use industrial locos. I'd honestly have rather just ridden the boat - I've been to a few heritage railways over the years and I'd have to say that one was the worst.
Nice bit of the country though, provided you don't accidentally stray into Barrow-in-Furness. Go to the Ravenglass & Eskdale instead.