I did PDN for a year after graduation. I worked for a small agency though, but a friend worked for PSA and liked it.
I had two cases. One was a 10 year old boy with a trach/vent and g-tube. I went to school with him twice a week, I worked 8-6. I usually sat in the back and read unless he needed something. He had a 1:1 teacher. I would suction as needed and do feeds. When we got home from school it was just him and I, we usually played board games and rode around on the golf cart if it was nice.
My other case was a 10 year old girl with a neurological disease. I did nights with her, 7-7 and 11-7. I would bring my computer and watch movies. They had a TV with a ton of channels too so I would keep myself entertained. It would depend on the night how much I did, sometimes she would be up all night, others I wouldn't hear a peep from when she went to bed until the morning.
Both cases I got a few weeks orientation, either with another RN or the family. They made sure I felt ready before being on my own. I liked PDN but it got to be where I felt like I was an overpaid babysitter. I needed something with adult interaction and a challenge. The little girl died the week I gave my notice, that was really hard.
You get to know the kids so well.