I have been sifting through lots of info, debating on whether i should spend the day at Atlantis. I haven't seen anything about an age requirement that i can remember, however i think i have seen that you must be 48" to use. I could be off on the height, but i would definetly check into this further. If i see anything more i will add to this post...would sure hate to see you go there and then her not being able to enjoy the water slides. good luck!