I'm not so bothered about a service book as you do get a receipt / record of the work carried out.
I do quite like having an owners manual - especially as "modern" cars can be quite complicated.
My last car had perforated leather seats and I know what you mean. I even filled some of the holes with leather cleaner once 🙈
I was quite careful in the car to prevent as much "debris" as possible ie. no eating in the car. Might not be possible for everyone.
Like you, I would not be happy with Lexus if there were indeed "special orders" that skip the normal waiting time.
I ordered just before you I think, but am still unsure about build / delivery.☹️☹️
I hope you are correct however....
There are people on here (myself included) who have waited 12 to 18 months for delivery so it does seem quite strange that delivery has now been reduced to 4 months.