I created a little side game when I went to the All-Star Game in 2006, and it’s applicable at all of them. Whether you’re at FanFest or at the events at Citi Field, try to find a representation of all 30 Major League teams.
In 2006 I found all but the Colorado Rockies. I suspect with this being New York, there’s a fair shot finding all 30 should be easy, with bonus points for the Montreal Expos.
Keep in mind it can be a little tricky, because often times those fans will have bought an All-Star Jersey and you’ll have to try to remember what team Castro or Crain belong to. (Astros and White Sox respectively in that case)
So go forth and find all the baseball fans from across the country enjoying the festivities!