I am not so concerned with SV but V from the rides in this particular scenario. I guess it isn't an issue, my oldest won't go on anything because he is afraid he will get dizzy or feel sick from riding. They went on the train ride with the baby, the big slide multiple times, and the carousel because I made them. My oldest (almost 9) said the carousel made him dizzy. My younger son did ride the helicopter that went up and down and in circles. I feel like a bad mom, he might like these things if I encouraged them or rode with him. Oh well, demolition derby tonight, we will all enjoy that (except for the baby, yay for babysitter!).