Does it have free wifi like the parks?

Yes

There is free Wi-Fi everywhere on disney property

Yes all areas of Disney have free Wifi

I originally answered no, but actually Disney does now have park wide wifi

Yes, but for security reasons you want to use a VPN while using the public WiFi there

Yea

Yes, inside the parks it's "Disney Guest" not sure if it's the same at Disney Springs. But if you see that one when your searching for available networks. It should be the right one.