Bit of a wait in the airport but given the cost saving compared to a taxi was probably worth it.
Picked up within expected timeframe and thankfully dropped off at the correct Delta terminal for flights to Chicago. We would never have found this terminal. Also, no traffic delays so flying in and out of La Guardia was a good choice for Manhattan hotel.
totally worth it! Arrived at the airport, made the call and was whisked away after a 10min wait. Stress free, comfortable, Fast! Would definately do it again.