Glad to hear you were able to pick up your car! It's unfortunate that they couldn't at least clean the car up and charge it for you. I guess I'll have to add a stop at a car wash after I pick mine up, hopefully tomorrow.Got my (previously) ECU-less car on Sat (see details here SR/SR+ (Model 3 RWD) Waiting Room), with all the inspection steps I forgot to ask about how low the battery was but I wouldn't expect that they'd tell me. The car was at 72%. I'm don't think there's a way to get history of the state of charge in any way though so we'll probably never know.
Also I saw the remains of the glue from the charge port sticker on the car, but it comes off easily with the alcohol spray they use at tesla.