Nope, only children under the age of 3 can count as a fifth person. If they are old enough to require a park pass, they count as a full body. I'm not sure if this holds true for AKL though, because they do have a sleeper chair in some rooms but I think it is for the two bedroom rooms. I guess if that's the case though, they may have them in the one bedrooms too! Then 5 people can stay (I think!)