AP1 (parity) is not worth the money you (or I
) paid, what you need is AP2 and that will be some time coming.
I would say the majority of my driving is on Dual Carriageways, and on considerably more than 50% of those I use AP.
I have a hand on the wheel at all times, and right foot hovering the pedals - accelerator override is required to overcome rare but sudden, inappropriate (although explainable), heavy braking. There is no right foot rest (unlike every other TACC car I've driven - although maybe that's not the norm) and it is tiring on my ankle.
I take over frequently. I have no idea if I need to, and apart from curve-over-brow-of-hill I trust AP, but what I don't know is, even with lightening reactions, IF AP will react. So if a vehicle I am about to pass is very close to the dividing line (AP makes no attempt to move further over) I override AP just-in-case. If I signal to change lanes and car does not move within a second or so (probably 50% of the time) I take over - otherwise following cars will either be confused by signal+no-action, or think I'm a twit ... In foul weather it is common for AP not to give me the (T) AP symbol at all. And so on.
So AP1 is all-but "manual driving". However, I would say (and I do honestly think this is OBjective) that
AP1 is less tiring; I have a frequent (highway) journey that I do 9:30PM - 11PM and back in ICE days I was always fighting tiredness the last dozen or so miles, never [as in: not once] has that happened since AP; so for that reason I favour using AP on most dual carriageway journeys. The Bing-Bong as AP goes on, and off, is reasonably annoying for passengers, particularly if nodding off!, but I expect there are others that intercede less often than I do and thus don't have those issues.
Sorry you don't have AP1-parity, sorry its late, I hope you plan to keep your car long enough that AP2 will have been rolled out in its full glory, but apart from mates-bragging-rights [yeah, I do that too - road within a mile is perfect as it has both a Launch-straight
and curves tight enough to be really impressive
on AP] AP1 is not going to change your life.
Actually, one caveat: in crawling traffic AP is absolutely marvellous. Just don't forget to turn AP off when the car in front of you gets to the front of the queue for the junction / roundabout / etc. otherwise you will just set off after it!!