We haven't done a true "live show" yet I guess but J has gone to a "Theatre Hike" (Outdoor play where the audience and cast hike from one scene to another) and also to the various shows at Sea World. Both times, J couldn't get enough...his eyes were glued to the performers! He also has been to multiple MLB games, all of which he stayed and was content from first pitch to the last strike out.
So yes, your LO may be too young to remember (thus making you decipher whether or not the money is worth it), but they certainly may not be too young to enjoy it!