I kow what you are saying about scorecards. As a kid I scored and collected every scorecard. I was so very sad when my mom threw them all away. I really miss the one with Ernie Banks autograph. He had hit a home run that day and I would relive the game through that scorecard.
I also had the one from the first Sox game I went to after turning old enough to drink (as long as no one asked for an ID)
Sounds like an awesome trip. It has me thinking of a Houston, Dallas, St. Louis, trip.