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I ordered and S-line, not an S3 so perhaps not in the best position to advise but this is what I learnt and understand is what is being built now.
To get illuminated door cards, centre console and light strip across the dashboard you need the Ambient lighting pack, this is not an option on any model but comes as standard on the S3 vorsprung only.
I understand the S3 comes with footwell lights and front only puddle lights, anything lower (S-like and Sport) do not have these.
If you have the puddle lights you can exchange them for the illuminated rings, if no puddle lights you have no chance.
My dealer to be fair did look into retrofitting, even involved Audi Technical and the factory in Germany. Upshot was it’s a no go. The door cards don’t have a blanking plate, they have a moulded recess. The wiring looms are modular and the required wiring is not in the vehicle, even if you get the wiring and put it in, the software in the car won’t recognise it as the factory have to configure it.
You can get lots from China, but I was told by an auto electrician that you literally have to find a positive and neutral for them and operate them manually independent of the car controls.
Model year update is imminent, will be interesting to see if they change anything else. If the semiconductor issue is easing, you’d expect specs to improve.