Yes. When we were there in March of 2009, you could only use it in the lobby area, but they were working on getting it up and running in the rooms, so I am guessing it is available in the rooms now.
Yes, DVBR does offer free Wi-Fi for point staying members. there's a weekly password issued (sundays I think) that you'll be given (or ask for) upon check in. It works great too!