How can I convince someone to ride a roller coaster? help?

im 15 and my partner is 15. next wednesday we are going to cedar point on a field trip. we will be there from 10:30am-7:30pm. My partner, Julianna, doesn't really like roller coasters. She said she will go on them, but not so much upside down ones. She said one or two upside down ones. She doesnt really want to go and isnt very excited. She has to go because it was $95 and NO refunds. She's like i'll ride whatever you ride, i'll go on anything. The instructor said we have to STAY with our partner at ALL times. If one doesnt want to go on the ride, you dont go on it or you do. If your caught without your partner your parent has to pick you up. (its a 4 1/2 hour drive). What would you do? What do I do

If she's willing to suck it up and ride with you, try doing a few things she wants to do as well. Buy her a little treat to say thanks for not making you miss the rides. She's accommodating you, so try to do something nice for her as well.

... Or, try to switch to a more compatible partner if you can.