Seeing the stadium is worth it, even if you don't do the tour or go to a game. There is a huge atrium that is open to the public where you can visit the Pro Shop and Curly's restaurant. Restaurant is a little expensive but you're mainly paying for the location. Would recommend a stop if you're in the area!
If you own or manage Lambeau Field, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.