Program doesn't start until 7, so you'll be fine. Last time we were there, they talked about how they go to different venues and plant shows looking for new plants, showed us some of the new hot plants, then offered 'em to us as door prizes!
One of the "road trips" we went on was to Houston area nursery early one morning. Stopped in Columbus for dinner on the way home. Talking, yakking, we missed the cut off to Austin from I10 and had to take the Seguin one further down the road, backtrack from San Marcos to Austin, and got home after 9PM! I wasn't the driver! I was the "back seat driver" who tried to alert driver, who was sure we were just fine. And we were....just took a new route home~