If you are looking for a way out to get longer life to the vinyl awnings, I use 303 Aerospace UV protectant on the exposed part of the awing when it is rolled up. You just wipe it on, and it greatly helps extend the life. This stuff
https://www.303products.com.au/product-range/universal/303-outdoor-protectantI see you are from TX, and if your camper is stored or in the sun "all" the time, you would need to apply the 303 about every 3 months.
The UV damage is what kills that last 12" to 18" of awning up by the gutter rail.
Here in central Ohio, the standard Dometic awning left untreated, can last about 9 to 10 years before they get so crispy they start to tear off the gutter rail. We have winter here where the UV is not as bad. I went with the Awnings Smart replacement, 303'ed it since new and I am now I am beyond the 10 years and it is still going strong. I also do everything on the roof that is plastic or rubber with it, including the Dicor caulk and it makes a major difference.
There is only so many manufactures of replacement awnings. Being in TX, FL or AZ and stored or in the sun all the time is really hard on anything rubber or vinyl. I'm not sure you are going to find an awning with a life guarantee to live in that environment as sold. Covering the awning is an option, but you did not want to seem to go that route. The 303 is only 5 to 10 minutes every 3 months and may be less effort for your situation.
Hope this helps
John