Probably why it looks as good as it does. However if it was only annually, and depending how car-wash / power-washer happy they were it can come off. Hitting the frame in both fall and spring really helps keep coverage.
If you are using the Eastwood frame coating ect, if they had already Fluid Filmed it then it probably wont stick well since the Eastwood stuff is paint. I had done that Internal Frame Coating once, but have fluid filmed ever since...so I cannot paint anymore due to the oil residue.