So, what’s up with the Astros Caravan thing?

I know today's got cancelled for the snow. So they're going through Baytown and Beaumont tomorrow. But on their schedule on the Astros website, the only mention doing autographs at one location, and the other location is just "Join us for lunch at Chick-fil-A, hang out with Astros players and the Shooting Stars and have an opportunity to spin the prize wheel for a free prize!" So for anyone who's gone to one of these, are autograph opportunities kinda sparse? What are these like?