If you know their going to be there on March 8th, I'd just get there early in the morning - like around 7:00am or so and just wait.

Or you could talk with your local newspaper place and see if they'll be going out there to do a story on the event and find out when their going.
or talk to who ever is in charge of the Ballpark and see if they can tell you some more info.

Best of luck!
RYAN-J

Check out My Autograph Collection! NONE are for sale or Trade. Sorry. -
LIKE
My Official Facebook Fan Page!DUE TO MY BUSY WORK SCHEDULE OUTSIDE OF AUTOGRAPH COLLECTING & INCREASING SPAMMING ISSUES I CAN NO LONGER GIVE OUT OR LOOK UP VIA VENUE OR EMAIL ADDRESSES. TOO MANY 'FANS' WITH THE WRONG COLLECTING MOTIVES ON HERE KEEP ABUSING THESE TYPES OF ADDRESSES AND END UP SELLING THE SIGNED ITEMS LATER ON FOR PROFIT
Printable TTM Log Sheet (Great way to keep track of all your pending requests!!)
Total # of Autographs in my collection:
2,020 Authentic Autographs:
1,872 Pre-Prints & Autopens:
155 Personalized Autographs:
569 Q&A Cards:
40 Cast-signed Broadway Playbills:
15