I am a Hurricane owner and have similar updates as you. I did the reflective bubble wrap from Lowes 2 years ago. I use it on the front windshield. I agree the curtains are of low quality. The backing fell off of mine after 2 years of sun. I keep my curtains closed to keep out the sun as well as the bubble wrap. I had a friend make new ones with sun blocking curtain material.
I also have added a removable shower curtain rod to put up as you start down the hall. I camp a lot with my son and his family. This gives my daughter in law more room for privacy when she takes a shower. We put it up after setup is finished.
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