I just got my cath in place last Thur. I think the dr is looking out for your best interest in wanting to put a fistula in your arm.
Most people have to stay over night for either surgery.
I think it also depends on the doc. But from my past experiences I have had to stay at least over night. Only once did I go home the same day I was given anesthesia. It will be awhile before I will know if the PD will work. I am sorry this response isn't more timely.