I'm not a chatterer at any sporting events. I am there to watch the game. (I am not as uptight as I am about being quiet during movies, though, I promise!) But I don't resent the more casual fan, because without 'em, ticket sales would be way down and it would be hard for SF to have a major league team. So I say, "please come! Buy lots of overpriced beer and food! Chat away!"
As much as I love the Giants and baseball, I loathed it when our company had its annual event there. I was so happy when we went to a bocce ball place instead. Sporting events are weird as a company event because you're not actually doing anything, and everyone sits facing something only a third of the people are actually interested in.
ETA: A glimpse of me in the 1990s, when I was in my 20s and the Giants played to audiences of approximately 6,000 most nights at Candlestick. I would be there, in an REI parka, with my radio tuned to the game (with headphones on), hands around a hot cup of coffee to ward off the wind and cold off the bay, scoring sheet in front of me, sport section to the right of me, media guide to the left of me. I would wear my Giants cap real low so that I could only see the battery (pitcher and catcher) for every pitch and would hold my breath with every play.
Imagine that nonsense for 60+ games a year.
Yeah. It's not wonder I spent my 20s mostly single.