[Durham M2 CS]

I have my car booked in for Paint Protection Film later this week. I intend to have the front bumper, wings/fenders, full bonnet/hood and mirrors covered.
I was just wondering if anyone who has done any mileage in their car has any advice on any other areas to have covered?
I was wondering if the film the manufacturer has applied forward of the rear wheelarch was sufficient?
I was thinking of perhaps getting the sills/rockers done too?
Also, the lower rear bumper/fender area behind the wheels?
I would be grateful to hear if there are any other areas I should specify for protection.
Covering the whole car is not an option due to cost.
Thanks.