I got the $35/week because I actually had to do some work. Had no problems with Internet during my entire stay.
I have Verizon and just got back last week. I found it much cheaper to buy the wifi when I got to the resort. I added a calling package before I left for emergencies back home. The wifi plans through Verizon were way more expensive than just getting it when I checked in. It worked well around the main sexy pool bar and Patty o. Our room was around Patty o so I never had a problem there either. I have heard complaints with those that have rooms on the far ends of the resort FYI.