The Angel Arena is a great source of local live entertainment, hosting a variety of sports including American Football. Nowhere near the capacity of Blue Sun Stadium, the arena can host up to 50,000 attendees. The arena provides a good view of Earth in the distance, although the panels are shuttered whenever there is any impending solar activity as a precautionary measure.
The grounds are maintained in the same way as they would be on Earth but all games and sports are played in a low gravity setting, presenting a different dynamic that is often presented with its own set of special rules. Some hosted games include g-ball, aero hockey, and American football. The Asteroids presents Heinlein in American football and often compete with other teams who reside on Earth. Often, the teams have exchanges so that they are accustomed to playing in both climates.
When there aren't any events or games scheduled, the groundskeeper may allow the occasional guest to explore the arena grounds, so long as they aren't too intrusive and keep out of trouble. A lucky guest may catch a sports team going about their practice drills.