Friend of mine here at work that is a sports nut like I am takes an annual weekend trip somewhere across the US for a "3 game in 3 day long weekend" excursion...earlier this fall, he went to a Cubs game at Wrigley on Friday, saw the Fighting Irish at Notre Dame Stadium on Saturday, and then went to Lambeau on Sunday. Drove back to Chicago Monday and flew back and was in the office Tuesday morning.
He said that the Lambeau experience was one of a kind...his only complaint was that there's very little room in those seats. Stand up for something and when he went to sit down, his seating space shrunk in half while he was standing.
Edit: he also said that attending a Packers game is a very costly experience. LOL