So very, very much, but I definitely would not have:
(1) Made it to rope drop -- I wouldn't have understood how much it helps out
(2) Gotten DD's hair cut at Main St. Barbershop and then have it decorated with gel & confetti
(3) Eaten a Dole Whip at MK OR a butterfinger cupcake at DHS -- so wanting both right now btw!
(5) Drank a Grand Marnier slushie at Epcot-France
(6) Found the "shortcuts" in the parks
(7) Figured out how to avoid the crowds over Thanksgiving week
(8) Known about Tour Guide Mike -- I absolutely love his site for best park days
(9) Known about all the little things to look for -- hidden Mickeys, interesting info on rides, behind-the-scenes trivia, etc
(10) Known the best places to see the fireworks or parades -- I'm sure I would've figured it out eventually over a few trips, but I didn't even have to try ... I just went and enjoyed (Robo's maps really help with Wishes)!