You have to buy and adult and child ticket for entry.
They sometimes have a small Lego toy for sale at the Lego store next door for $6 with a coupon on the back for a purchase of one adult ticket, get one child ticket free. Tickets are $22 for adults and kids. Also, I have found the toy with the coupon in Family Dollar for $4. The current coupons expire on 31 Dec I believe. Perhaps they will put out more soon.
Children 2 and under are free
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