Plz plz plz helpl!!!!!!!!!!?

im going to cedar point some time next week. i like most roller coasters but i am totally scared of the big ones last year i went and i said ill go on them... then i looked at then and got scared. i want to go on the top thrill dragster mantis mellinum force and the maverick. i ABSOULTELY CANNOT WHIMP OUT! i dont want to ruin it and i have to overcome my fear! plz answer i need all the help i can get!