Six to eight glasses of liquid may not do it on really hot days. It's not enough to quench your thirst, Duff says. In general, drink more than you normally would.. The color of your urine is a good hydration indicator: If it's almost clear, you're getting enough liquid.
Brookfield Zoo is open every 365 days of the year! Weekdays 10:00 a.m. - 5:00 p.m. Weekends 10:00 a.m. - 6:00 p.m. Open 365 days of the year! Please note: Indoor animal exhibits close 30 minutes before general zoo closing, except for Tropic World, which closes 45 minutes before general zoo closing.
More about park hours : Check-in time is 2:30 p.m., and check-out time is 1 p.m.Quiet hours are from 10 p.m. to 6:30 a.m. Length of stay: you may stay up to ten consecutive days in any one park during the summer; the stay limit is extended to 20 days between Oct. 1 and March 31.