Deffinately bring laptops or books or something. They usually have pillows and blankets there (I don't know about where you're going, but where I was going they did). Some places have a suite with a bunch of chairs like mine, and some places are just a bunch of hospital rooms with beds and televisions. The chairs at my place had a massage setting which was really nice, but it could be a little noisy when your trying to sleep, so he should bring headphones to drown out the noise. Or you could take the opportunity to socialize with people that are going through a similar situation as you. He should probably wear sweat pants or pajama pants, you know comfortable stuff. Deffinately bring your own food, because the food they had at my place were cheese/peanut butter crackers and club soda. Other than that, just keep him company and keep supporting him and you guys will be just fine best of luck!