Four stars only because I haven't seen it all. Went last week to the music educators event. They are getting the school field trips going in a few days. Already scheduled my school to go.
They have a nice coffee shop and a cafe for lunch. Gift shop is great. New stuff coming in all the time. Staff was great and very helpful.
I am planning to go to many concerts they have coming up. Going to take my son to the international guitar night in February. Check out the extensive list of upcoming concerts online. Some are free just with admission and some you have to buy tickets to.
It is a massive place. Two floors. Very well laid out. You don't feel squished at all. It is definitely a place out of state visitors should go. And then go across the street for lunch or dinner. It's a once in a lifetime place and it's the only one in the world.