I took DD (3y8m) to see this today and have to say that is was excellent.
We had seats in the first block of tiered seats, 5 rows back. So not really close but really central and with excellent views; tiered so no adults heads in the way.
DD just loved every second of it. She was on her feet singing and dancing, shouting out (at the right times!) and waving her glow int he dark whistle around (bought last week for 59p as I am too tight to pay the £7 for their flashy light things).
Her favourite part was the finale and she was dancing in the aisles
And it was on for a good while too. Started just after 1:45 and finished after 3:30, with a 20 minute interval.
Not been to one of these bigger Character shows before, but it really was worth every penny.
Excellent!