I declined antibiotics at my last dental appointment, but my dentist and surgeon are neighbors and my dentist knows my surgeon recommends pretreating with antibiotics. He said next time I will need permission from my surgeon to decline, which I thought was odd. I am going to discuss it with my surgeon at my 6-week visit, but I think the risk of taking unnecessary antibiotics outweighs the risk of joint infection. I am not sure what I will do if my surgeon says he requires it.
ETA: I was only getting my teeth cleaned at that appointment.