(1) No, I don't. Because restaurants don't allow it. Do a lot of workshops? Yes. I was simply asking if anyone knew of a BMW Indy that DOES allow it. Nothing more, nothing less.
(2) I very rarely supply the wrong part. Why? Because it's called research, verify, enquire then purchase. Do the job right the first time, there is no second time.
(3) I've had labour only at plenty of dealerships and Indy workshops fitting parts I supplied. Just never a BMW dealership or Indy. Hence my question.
Please, don't overthink it.