Ron loved the Stadium. He always enjoyed Quidditch, of course, but there was also the fact that so many people he knew were on the team (including his brother).
He liked festivals like this. It was nice to watch people having fun and it was a pleasant distraction from his life. There was a part of him that was a little disappointed because Ginny wouldn't be with him this time but that didn't mean he wasn't going to set his mind to enjoying himself a little.
He wandered around the stands, eating snacks and treats and keeping his eyes peeled for any of his family.