I agree, @2019theatremom.
It would have made me very nervous to depend on getting walk-ins, but even some schools that required prescreens were taking walk-ins, and, this year, a student could do at least a few at both NY and Chicago Unifieds. (Granted, at many that had prescreens, one still had to attend a campus audition for callbacks, but there were others who did the callback at Unifieds.) It was nice to not pay the audition fees at D’s walk-ins. Besides, she loved them–was excited to do them and energized by them–and would consider them if accepted. If fact, one was one of her favorite auditions of all.