Is hershey park safe?

well, i'm 13 and my whole grade is going to hershey park.... but there isn't any chaperons. which i think is ok. but my mom doesn't. she thinks that someone is going to me in the bathroom or something. but im in a group of 7 people and we are joining another group too which is 14. and in my group alone are 5 HUGE guys. not fat huge. but big guys. and plus i think there is some on the other group too. and us 2 groups will split up sometimes but your group of 7 have to stay together. our teachers are also giving us their # and we have to give ours too. and when we go to the bathroom, we will wait outside the guys and they will wait outside for us, and if someone is screaming bloody murder they will come in or something. and its not like im defenseless. so can you help me convince my mom its safe. or give me some ideas to help me. thanks and i need this pronto! thank you sooo much!