I had the awnings on my RVs and guess I was lucky; never had a problem with them, but some of the things I've seen in RV parks, and on the road, were hilarious and at the same time I felt sorry for the owners. And repairing or replacing them has provided a lot of business for my brothers in the RV repair business. /forums/images/graemlins/laugh.gif
If you leave them out and a strong wind comes up, that can tear them up pretty quickly.
If you leave them out and adjusted so they're level and it rains, they can hold an amazing amount of water before collapsing.
And if one fills up with water and you then try to lower one end to let it run off, sometimes that end drops so fast and hits the end of the adjustment so hard and fast, it bends the support arms.
If an RV owner forgets to latch it in the closed position, it can come open driving down the road. That's an interesting sight.
And of course, I suspect all RVers have hit their heads on the support arms while the awning is open.
One of my brothers even came flying around the end of his RV one day on a golf car and forget the awning was open. The canopy on the golf car destroyed the support arm on that end of his awning. /forums/images/graemlins/laugh.gif