Looks like we worked it out. We intend to get Duc Island tickets in T1 (includes lunch, parking, zip line, swag, pace lap for my Duc). That's a $30-50 premium over seat + parking. Consider there's no food or drink allowed and the prices for concessions are through the moon- ready parking to the bike stash is worth it alone.
For now, Mike in Austin, Darren and I will be in Duc Isl. Darren and I are staying at the Rodeway, the only cheap motel in town (BTW- stay away from Motel 6).