Can anyone tell me what rides to not let my Dad ride .. he got a pacemaker last May. He is renting a scooter from Apple. He had a problem with blood clots but is on blood thinner for that. He has problems with his knees but w are renting the scooter... He is not a coaster rider so I am not talking thrill rides but just the regular fantasy land etc rides... Is their any caution to stay away from certain rides.