13 years old and going out without parents ? 10 points beeest answer!?

Okaaaay, well it all started that i wanted to go to the fair (an amusement park), and my friend and her mom (which she has already met) would be at the front and i would be with 2 other friends. She didnt let me go . Umm.. dont you think thats a lil too much,she has met the mom and thought she was nice and everything and im really close to the girl and plus i would be dropped off with TWO other friends not just me but 2 others . And they would be waiting at the front for me like seriously ? -.- I'm a good girl never go out and when i want to she says no or "we got plans" i get good grades and hangout with good people and still get treated like this. I mean i remeber when i was in 3rd and 4th grade and their was a field trip to epcot and they allllllll went except for me . ok i know im not 16 or whatever but come on like everyone does this and ALONE i was atleats gonna be with a parent but people do it ALONE . Soo i know this is long but just say what you think about this, Thanks ! ;)