I did my own ceramic protection on the ZS I’ve got now but there’s not a chance I’d do it again. It took me 2 days to prepare and treat the car and that’s likely to be twice as long now, assuming I can actually get it done. I understand the wish to get the dealer to do the job, hopefully they’ll do a good job for you. You’ve gone for the combination that’s sitting high in my thoughts, although waiting for May might change my mind.
Top tip, do it as soon as you collect car and get home, before any polution enters the paint. Hats off to you though trying to do ceramic yourself. Lifeshine is like a polish much easier to use 🙂
Never done a Motability car’s paintwork tbh. The interior maybe depending on materials of seats.