I’ve read you can only fully shower after you have been to the nurse (7 days post op) she will then give you the all clear for showering …… You can have a shallow bath/wash before then it’s just a thing of not getting your stitching/ strapping wet until you’ve got the all clear.
I totally agree with the shaving thing I’m exactly the same!!! Haven’t had my surgery yet either but ip really hope I can lift my arms soon after