Hello Mommy23 ... How are you this evening?
I'll admit that I probably won't be of much help to you on the parking issue but I'd like to ask a question if I may.
The reason I can't help you with the parking issue is because my family and I have never brought and left our car at the airport because we use a car service. Have you considered that as a possibility?
Our vacation starts when we leave the house so we hire a car service to take us to the airport. We usually rent a Stretch Limo, because we only go once a year and we really try to do it up ... but then again we live a good 45mins to an hour from Newark Airport ... I don't think paying that money for a 15min limo ride would be worth it.
ANYWAY, how much will it cost you to park for that time VS. what a car service or taxi would cost ... even if the service is more it might be worth the extra for the convenience of dropping you off at the terminal and taking you straight home.
I mean it's all up to you, what you'd be comfortable with, and most importantly what you can afford. If you would like the name of the service we use I'd be MORE than happy to recommend them to you as I've gotten prices for at least 10 different companies and they are by far the best!

They do cars, limos, vans ... the works and they are very polite and clean!!!
Hope it helps ... hope you find what you're looking for!!!
Take Care & Be Safe!!!
Frank
Disney DieHard