I actually did celebrate my 30th birthday at Disney. I chose Garden Grill for dinner - boring right?! But I loved it. The food was great. All characters came over to "sing" Happy Birthday to me. They gave me a card with all their signatures, and they all posed with me for my picture. The waiter also thought it was funny that I wanted to celebrate my birthday there - not having kids, and not married - so he gave me the 8" (or 9") birthday cake for free. It was a fab 30th birthday!