Re:
My girlie and I also did the 2012 edition and with very little cycling experience she enjoyed it enormously. I renovated a Raleigh with a mixte frame and the odd cheat in the gearing dept for her to ride.
Entry was a bit of a 'mare as they limit the number of foreigners so you have to be on the ball when the list opens.
The trip can be expensive but worth it though especially as it's a special occasion.
We unfortunately missed the Brittania but a couple of female pals went and have raved about it ever since. Come to think of it I built their bikes too so theres probably something in the blokes love techy stuff thing.
Do it, you won't regret.