You can do a tour after a show as well. Check the web site, the show is fun.
You can purchase tickets on site. Sometimes tours are sold out, but they leave every 15 minutes and there were openings for us on a busy Saturday about 45 minutes after we arrived, so we just waited; took a picture with the giant guitar and wandered around the giant gift shop. You could call them before you head there on the day as well to make sure theres availability :)
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