We saw Goldilocks and the Three Bears last year, when my kids were aged 15m, just under 3y and just turned 5y. They all really enjoyed that, laughed out loud and were transfixed for the entire play. My now nearly 6 year old daughter really enjoyed LRRH, but the younger ones lost interest pretty quickly. There was less crowd laughter, as I think many of the jokes were directed at older kids (references to Lindsay Lohan, Madonna, therapy etc). I'd be happy to take my eldest to the next play (Little Mermaid) but wouldn't bother taking the younger two.