What Bryan ultimately decides to do is to change the tourists into animals over the course of the day. As the visitors enter the zoo, each group will randomly decide to go look at a different exhibit. They will subconsciously refuse to look at another exhibit until they reach their destination. Once the group gets there, their changes will start and will progress over the course of their visit. Every thirty minutes the group is in the zoo, a random physical and mental change will happen in each of the group. Clothes will remain on unless the visitors take them off on their own or that their physical changes would damage them. The clothes will fade away into nothing so that piles of clothes aren't strewn all over the place. Further, adults will get slightly more horny and less inhibited while kids won't pay any attention to any sexual behaviors of the adults. When they leave the zoo, the changes will stop progressing and eventually reverse over the course of the next week, unless they return to the zoo in that time.
Bryan double checks his computer screen to make sure all of the necessary variables and parameters were inputted correctly. He glances at the clock. Just two minutes before the zoo opens up. He clicks "Save" and watches the progress bar implementing the changes.
"Yo, Bryan!" Garrett, a close friend and coworker of Bryan's, called out. "You ready for today?"
Bryan looked at the notification on the screen telling him that the changes were successful and smiled. Yes, he was very ready for today.