Starting Saturday at 7 a.m., the post-competition selection window extends to 90 minutes and chaperones will escort selected athletes directly to the Doping Control Station; bring a photo ID. If you have specific procedural questions or fairness concerns, ask here — our job is consistent, unbiased enforcement of the rules.
I keep my passport card in my warm-up bag and a tiny meds list; last meet the chaperone let me do a quick warm-down and grab a recovery drink under escort, so ask for that if you need it. Small caveat on “bring a photo ID”: a phone photo didn’t fly for me — physical ID did; WADA’s quick overview helps newbies: https://www.wada-ama.org/en/athletes/doping-control-process (TSA for your bladder).