From the hype on their web page:
Q: How do I know what maintenance is required to keep my RV Warranty Forever agreement in force?
A: Simply follow the maintenance requirements outlined in your RV Warranty Forever agreement. If you have any additional questions, please contact our dealership.
Reading between the lines, you will be required to have specific work done, by them, at inflated prices, annually or even semi annually. This is a gimmick that puts money in their pocket with providing you with little "protection."
NOTHING IS FREE