I have never been on a big roller coaster and I am going to go on one June ninth one of my questions is is it better to close your eyes or leave them open on the roller coaster

Another one is should I sit in the front or in the back

You should go on the roller coaster with your eyes open if it is your first time. And you should sit in the front. The back of the roller coasters at knotts berry farm are painfull! If you want to add a little more excitement go with your eyes closed. Have Fun!