 The Kings Island park was not a closed set when this episode was  filmed. To give it a realistic feel the episode was filmed on a  normal park business day without extras. Patrons who had been  standing in lines for the rides, for up to an hour in the hot sun,  gave angry stares at the Brady actors were ferreted to the front of  the long lines in order to shoot the ride scenes. Several of the  Brady cast members have spoken about their memories of the heat on  that day and of their surprise to find the park open for business as  usual. They didnt want to be taken to the front of the long lines  but relented when they realized it was the only way to complete the  scenes.