Walk inns at Dischem. *******

Drove 20km to Fourways Mall. Stood in a Q fo an hour for a walk in covit vaccine. Was asked to see sms showing registration on the Government Website. Showed the sms and was told to wait for the next one. Please explain to me what a walk in is. Dont adverise that one can walk in and get a vaccine if they cant. All I can remember from Dis chem is the fine they received for inflating mask prices during lockdown and advertising walk in vaccinations. Which is not the case. David