do it!
we did 3 weeks, 3 years ago, our kids were 9 7 and 5, we stayed "cheap and cheerful" on 192 and then last 4 nights at HRH...
the cost really isnt that much more, after all, its the flights that eat into the budget. we had bfast stuff in the room made a picnic to eat in the park to keep the cost of food down and then "ate" properly in the evening (ponderosa, golden corral, dennys etc.
the kids didnt want to eat at the end of the holiday, they were on food overload, just took the crystal light sachets and filled water bottles at the fountains...
we took our money and split it into 21 enevlopes, when it was gone for the day, it was gone, (i think we had about $100 per day for everything imc food..
next year we are doing 18 nights, 14 on site, 4 at HRH (hopefully, depends on what rate i can get for the hrh)
i waish you a magical trip
tracy