We own a 2019 Compass 23TR - so very similar to yours. I don't have many tips on storage. But as Bob says, you can coil up the sewer hose and put it in the dump bay. The curtain is the privacy curtain for night. It would start on the driver's side window in the corner, go to the front window corner, around the mirror and then the same on the passenger side. Look for velcro along the top of the windows.
We like our Compass - easy to drive, can park it almost anywhere and the gas mileage is very good. Enjoy it.
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