My two cents regarding stuff and transportation:
1. Stuff. I used to buy a couple things at the expos but now I commemorate races with purchases from rawthreads, etsy, ugg and harveys seatbelt bags. For one of the princess half weekends, I bought new minnie mouse ugg slippers instead of official merch. My husband gave me a really simple etched stemless wine glass from etsy for the dopey. I've used disney races as an excuse to buy a harvey's purse occasionally! And I have lots of hoodies, tanks and t-shirts from rawthreads. Those generally hold up better than the official disney merchandise I've purchased in the past. The remaining exception:
@mateojr usually gets a running mickey plush.

Guessing he will ask for one for the 10K! Guessing he will get one because the 10K shirts don't come in kids' sizes (boo!) so looking for something fun to commemorate his race!
2. Transportation. I love to walk after a race, so I would prefer to walk through Epcot or walk over to the monorail and take that. But recently, the bus has always been more convenient. It's right there at the finish, and we've had either no wait or a very short wait. And even though I feel like walking, getting my family through security is not as simple as hopping on the bus. And I feel like they have been waiting around for me long enough, so I don't want to increase their wait time.