Not sure if the lack of fevers is good or bad, since it is one of the clues they use to determine what is going on. I had a bunch of labs before my drain too. I even had to wait for plasma transfusions to reverse the coumadin I was on before they could begin.
Still, it is good news that they can sit on this for a while, so you and DH can get a respite (if that is truly possible while son is in the hospital!). At least you know he is in a good place if something else comes up!
My husband was a big believer in vacations and did not care if he missed something. He would check email for urgent stuff when he could, otherwise it could wait. Nobody is that important. He figured they needed to manage without him. What if he was laid up for a prolonged period? They'd be stuck if they did not know how to manage.
Jan 