Hello. We are thinking of going to Disneyworld in Sept. I have 4 children, ages 10,7,5, and 2. When I try and book online with 4 children it is not available for the dates I am looking for, but when I change he children to 3, it is. Does our 2 year old count against our room total? Can I book online as a family of 5 and not have an issue when we arrive if there are 6 including out little one? Thanks in advance!