We keep our blinds pulled up most of the time (parked or in transit) & pulled down in the evening (for privacy) or if it gets too hot with the sun shining in the window.
The trailer is rarely closed up (err, folded down) as she is kept popped up inside the shop until we hit the road. I loke to wander in and out & hang out watching videos or reading. If DH cant find me in the house or yard, he pokes his head thri the Magic Mesh screen to discover me lpunging on the sofa bed, feeling empowered with my own remote control to the small tv inside the trailer. Haha
Anyway, no sag on the blinds as of yet (knock on wood)
2012 FR Flagstaff T12SDTH
1996 Shadowcruiser Pop Up Truck Camper
1967 Newell Motorcoach
2003 Ford F150 5.4 V8 Triton Super Cab
2004 Nissan Titan LE 5.6 V8 4x4 Crew Cab