I had heard about the notorious crowds but figured on a Monday it wouldn't be that bad. It was HORRIBLE. It was so crowded you could barely move. The lines for everything were over an hour (except the real kiddie rides like Wiggles World).
We didn't want to buy the flashpass because 1) it's free at Disney and I'm spoiled and 2) we had already spent $29.99 per person to get in, $15 to park, $20 to rent a locker, and $36 for lunch which included a slice of pizza and drink for each of us. It's a bad value.
They don't open until 10:30. We're used to how Disney does it... they open at 9:00 and you can walk on rides for the first hour. So Six Flags opens at 10:30. We were there for park opening, we speed walked to Superman, and they didn't start letting people on Superman until 10:50! I'm like... shouldn't you have already run your tests before park opening?!
And they don't have child swap, so DH and I had to take turns waiting in line for Superman. So, long story short, we got there at park opening, went right to Superman, and by 12:15 both of us had ridden Superman. Ridiculous. So we didn't do any more big rides the rest of the day because it's not fair to my son.
My son is just tall enough to ride on the Thunderbolt which is a tame wooden coaster. He liked that, but we waited over an hour for it.
The employees were fine, but the other people in the park were noisy and misbehaved. Tons of teenagers. Screaming children.
The park is dirty. Everything you look at needs a paint job and when you are waiting in line don't lean on anything because there is gum stuck everywhere.
We went to the water park in the afternoon since the lines were too long to go on anything on the regular side. Guess what? The lines at the water park were too long to go on anything. We waited 30-40 minutes to get into the lazy river and that's the only thing we got to do there.
Never again.
Canobie Lake Park is better. Sure they don't have anything as cool as Superman but the crowds are much much lighter and it's just a more pleasant experience.