That seems a bit daft to me. What I've seen on the AA board here is that you (we!) get - and I'm basing this on being BA Gold so OW Emerald -
An expedited security line, offering you premium access through security checkpoints
https://www.flyertalk.com/forum/amer...er-thread.html
And from the
AA website
Experience our private check-in with access to an expedited security line
It also means on your return you can use it at ORD too. - Which is also my plan when I return to the UK via CLT.
When are you actually in ORD? Perhaps a mini meet up with [MENTION=955]BearX220[/MENTION]
I've previously done the Wrigley field tour and enjoyed it and I'm not a baseball fan and this was before the recent refurbishment .