AAA baseball team may be first ballpark with Wi-Fi: I can't seem to recall a similar story, and the Sacramento River Cats think they're the first at Raley Field. (In Portland, Ore., a ballpark has Wi-Fi, but only through a nearby connection which caused a little controversy.)
Initially, Wi-Fi is available just in suites and the "Solon Club," their business club. (A Solon is a wise and capable leader, says the dictionary, named for the Athenian legislator.)
But next season, Wi-Fi will be ubiquitous, and they expect laptops and PDAs to show up. Even better -- peanuts, getcher peanuts! USB phone charger, getcher USB phone charger -- fans will be able to order food delivered to their seats.
In my continuing theme to find the infrastructure/information technology angle to all public-space hot spots, the ballpark says that their operations staff will use the Wi-Fi system to adjust lighting and heating/cooling remotely via handhelds. They'll also scan tickets at the gates and use it for security systems by year's end.