Having tried this, it's dodgy at best. Wifi at the waiting areas is rare, especially since they're often located pretty far out at the behest of taxi companies.

At McCarran (LAS) I ended up just splitting a taxi cash with another guy from the queue after Defcon. Though considering the taxi driver _insisted_ on taking me to my terminal (for another $7 since he had to leave the airport and re-enter) I was annoyed I couldn't review him.

Wifi doesnt often work outside at airports, where you actually find and get in the car.

You can’t sign up for Lyft with WiFi can you.