For all of you who attended the fair, it's interesting to note that amusement park rides are actually one of the least dangerous forms of recreation available to the public. Despite the common perception, the rides are actually quite safe. With only 2500 injuries reported annually in approximately 300 million rides, you have less than 1 in 100,000 chance of being injured by a ride at a carnival.
Compared to the 1 in 14053 chance of being involved in a fatal car accident, the 1 in 75,000 chance of being hit by a comet or asteroid, or the 96.4 in 100,000 chance of being injured by a toilet, you can see that it's quite clear there's very little danger.
Added to that the fact that 60% percent of the accidents that do occur are because of people who disobey the posted rules, and it seems that there's very little to worry about at all.