Would it be a Bad Idea to ride on Rollercoasters if you have a history of Seizures?

I'll be going to an Theme/Amusement Park here in Tennessee later today (Dollywood In Pigeon Forge) and was wanting to know if it would be dangerous for someone like me that has a history of seizures to be riding on a rollercoaster? I had my first rare seizure in 2008 and since then i've been too scared to ride on the rollercoaster rides everytime i go to Dollywood. I usually just ride the water rides and i feel just fine when i ride them but I haven't been on a rollercoaster since 2007.. the summer before i had my seizure. Thank You