Mousesavers rate and Doubletree Suites DTD

[Bea]

I was fortunate enough to get the Doubletree for $79.00 using the Mousesavers rate (August) . This price includes free continental breakfast for 2 adults and 2 children. I have 3 children and was wondering if anyone knows how much we will be charged for breakfast for the 3rd child (3 yr old) ? What age do they consider as a child? Thanks!