I do sympathise with you. In an ideal world, all owners of bitches in season would keep their dogs in their gardens or at the very least walk them in quiet areas and at quiet times, although I also appreciate that this can be difficult for some
We originally wanted a bitch, but ended up having boys, as having no garden of our own, didn't want to be responsible for any accidents or the male population becoming distressed. Luckily Bailey is "just about" controllable, but if he was any worse, he would be minus a couple of "bits"
I still think you are doing the right thing for Sammy, and hope he has a quick recovery from his op. I'm sure he will be trying to bounce around on Tuesday, like nothing as happened.