http://www.cntraveler.com/stories/2013-05-14/vacations-hotels-for-kids-with-allergies
This articles suggests the Hyatt in Aruba. We are actually going to Aruba ourselves for spring break with allergies, staying in a timeshare condo that we rented. Things that attract us to Aruba are a direct flights, American restaurants with gluten free menus, Mortons for steaks if we run out of options, and Linda's dutch pancakes and pizza that has gluten free options. Friends said they saw gluten free options in the grocery store there, so we booked it.