The previous 20 person limit (since lifted) is for the REI schwag bags and the Museum Passes -- those are still first come, first serve and for badgeholders, but the ride and BBQ is open.
My flight was cancelled last night and I'm working now on getting to Austin in time for the ride. If I don't make it to the start, I'll see you along the route.
There's been a great response from the local cycling community.
Hope to see you there!