I didn't even get to bother with any of that. The dealership paid me the highest quote I had seen online, with the car as is. Wasn't dirty, but I didn't wash the exterior. I did clean the interior, wiped the seats down, used carpet cleaner in some areas due to light spills on a recent road trip, vacuumed etc. I was glad I didn't go through a lot of efforts, but again, I used to carry a duster and wipes, so the car was mostly clean. I have ocd.....
Edit: yes it was a sad day when I left my car forever.....
I took a few last pictures as memory keepsakes.