There was no wait at all for the shuttle at the Parking Spot Lot or the airport upon return. The Parking Spot Lot is only minutes from the airport.
Making a reservation ahead of time on line made entry and exit of the Parking Spot Lot a breeze.
Factoring in the cost of the parking, my round trip gas and tolls I still save money over the cost of hiring an airport limousine service to take me to the airport and back.
drop off and pickup at the airport [Newark] was quick and efficient. Also having our vehicle ready to go once we retuned to the parking spot was very efficient [paid VIP parking]