Where can I get discount tickets or coupons for Brookfield Zoo near Chicago? You can if you know what to look for. The secret to getting the Brookfield Zoo tickets is to find the right codes. Are there any discounts at Brookfield Zoo? The amusement park is one of the best around and has very little competition. What is the best deal on admission tickets? How to get the cheapest price? Secret Codes for entertainment is a great bargain in Illinois. Sometimes a Coke or Pepsi can will offer a deep discount. The shows are special!