Is Academy of Rock (in Rockwell PowerPlant Mall) a good activity for my 4 and 5 year old? Or are they too young?

It is a good academy for music. Lots of good reviews from netizens too. Most important your kids must love the place. The staff there are very talented. We saw there are a few kids younger than three joining the music class for toddlers. They will let them have fun with sensory and music in the class. It is a good exposure for toddlers.