It is free for DVC members staying on points at a DVC resort. It was nice to take my laptop and be able to check mail, etc. without having to pay the $10 per day. If you get this "perk", be sure to check your bill when you check out - I was charged for three of the five days I stayed at OKW and had to call the front desk to get it taken off my bill.
Also, it's not wireless - there is an ethernet cable in the closet that you use. Some people have reported bringing their own router to set up a wireless ability within the DVC unit - but that seems like too much work for me, since I can use my Iphone to go online if I need to have it while I'm still in bed!!!!