Wi-Fi is a means of connecting to the Internet, wirelessly. There is Wireless internet at the crocketts tavern, and the toll booth when you check in. Or, if you are in a preferred site, they have some kind of router setup that lets you use the internet. The router is included in the $9.99 a day.
If you want wireless, it's still $9.99 a day, you pay with your room key.
You are tugging on Superman's cape..... cuidado