WDWFWFan,
It was about the January 2012 timeframe. All the other resorts on property were getting the free wifi installed and the Fort was down the list toward the end. Then they encountered the RF problem (the other resorts don't have the busses driving through the middle of them). So to keep the service on par with the other resorts, they quit the daily fee so it's not wireless but it is free.
You still have true wireless wifi hotspots at the Meadows Trading Post, the Outpost (checkin) area, and the Settlement area (Trails End). The service is slow (about 3g speeds) but it works.
They probably still need the deposit for the modem based on a replacement cost scenario. That being said, I try to disconnect from technology as much as possible while on vacation.
It is what it is right now.
Bama ED