Thanks CookieMonsterGTI, that is helpful.
Yes, I suspect I would get used to the infotainment system and screen pretty quick. I've got AAOS on my daily driver and it's great. I've just sold my 22 plate Audi TT Quattro Vorsprung as I wasn't using it enough and the 20" rims, lovely as they were, made the ride a little harsh on my rural Lincolnshire roads (GTi would have to be on 18" rims with DCC) So, yes the 13" GTi screen is a bit of a culture shock!
Has the wireless Carplay maintained a stable connection for you. I could live with AA if it simply works and does not suffer frequent disconnects.
Regards the seats, I'm fairly broad across my upper back and shoulders, so I guess that's what is causing my issue with the seat side bolsters squeezing my chest. Maybe they will give a bit with age.... Anybody got the leather seats and a view on how they compare to the fabric ones?