We stayed at the CBR for 10 days the first week of June. I took my lime green Mickey heads and wrote our names on them. One had my Disboard member name, one had my name, one had my husband's name and one had my son's name. I laminated them so they would be sturdier. I took along some clear tape and taped our Mickeys in the window.
As I walked around the resort, I looked to see if I saw any other lime green Mickey heads. I didn't see any during the whole trip.
I also wrote my Disboard member name on another Mickey head, laminated it, punched a hole in the corner and tied it onto my backpack with a bright green ribbon. I didn't see any other Mickey heads anywhere in the parks.
I also had several Disney magnets and I put those on our door.
When we left, I left the magnets on the door for either mousekeeping or the next guest. I took the Mickey heads and tape off the window when we checked out.
I think, so long as you remove your decorations when you leave, the mousekeeping staff doesn't mind.
Lisa