Never been. Took my kids to the Carnival in Glasgow, because it was beside the dinosaur exhibition we had actually gone to see, 20 odd years ago, even forced myself onto the big wheel once because my then 4 year old wanted to go on it. I spent my time looking at the bolts wondering if they would fail and threatened the guy in charge with death and destruction if he dared to spin the seat. The carousel was my usual limit. a roller coaster would be a definite no no, and I don't care what the statistics say.