There was an older study that after looking at over 2000 games, giveaways increased attendance by 1500 fans.
Behind a paywall, a story said that returning the kid’s toys in happy meals increased sales by 3.8%. For McDonalds. I don’t know if was sustained, I wasn’t going to pay to find out.
The Twins do have people working on game day experience and promotions
Senior Director, Game Day Experience: Sam Henschen
Director, Marketing Promotions & Special Events: Heather Rajeski
I don’t know if a senior director has subordinates or just a fancy title