While not the Dream, we spent 2 weeks on the Wonder in Spetember. They were awesome. They pretty much made my daughter whatever she wanted. We stayed away from the fast food places for the most part, but she did get the bratwurts a couple of time with out a bun at Pluto's Dog House. Just make sure to tell them why you need it. A couple of times, our servers were working the place, so they knew.
Also, make sure you note it on your ressies.