There is a refundable deposit for the modem kit. If you're going to pay $9.95 + tax, you might as well sit in comfort at your site and use it to your heart's content for 24 hours. Unless you go to the "internet cafe" at the check in building or another resort, you're going to sit out in the weather at the Meadow or Settlement Wi-Fi spots. Either way, the internet is high-speed, and I had no problems with being bumped off. IIRC, the deposit was $125, and refunded when you turn the modem kit back in. We tried using our own modem, but no go. You have to get their kit if you want to access the internet from your site.
We're at the Fort enough, that we finally bought a netbook with minimum usage (250 Mbs) for $39/month. I'm using it right now on our home wireless network which by-passes the VZ Wireless network. Just another option to consider.