Afraid of rollercoasters?

i dont mind scorpion and gwazi at busch gardens but other then that i hate roller coasters. for our 8th grade trip we are goin 2 islands of adventure which is like all rollercoasters and i kno all my friends r gunna try 2 mkae me go on them. so i was thinkin bout not goin but then i thought im never gunna c these ppl again! i hav2 go. what do i do?? is ne1 else afraid of rollercoasters? i was lookin at the hulk cuz i thought it wasnt tht much but then i watched a pov of it n im like no.