I went on all the kiddie rides with my 3 year old niece, including a kids rollercoaster, bumper
cars and some spinning ride that made you dizzy. I never thought there would be any harm in it since the rides were so small and targeted for such young kids. It wasn't until afterwards that my sister mentioned to me I shouldn't have went, and that she wasn't permitted to go on any rides, even kiddie ones, while at Canada's Wonderland.