This is a tough one. I think the show is very entertaining and your child might enjoy all the singing and dancing. However, I think you might want to be careful at how tired your child will be.
When we went my youngest was 3. She was so exhausted she fell asleep before the show even started and wouldn't wake up for anything. I ended up paying for her ticket and she didn't eat anything and I couldn't eat that much because I was holding a sleeping child. Strollers are not allowed inside.