So we just got back this week from my birthday trip, and here's what they did for us! The trip consisted of two different groups of family - My mom, sister, and niece (Abby was having her 5th birthday too), and DH and me. Mom, Amy and Abby came before us, so we only had a couple meals that overlapped, then it was just me and DH.
CRT Breakfast - all 5 of us ate here. They made a nice little fuss over us here. The tables were decorated with mickey confetti and streamers. Abby and I both got a magical moments certificate and pen for the princesses to sign for us and an individual birthday cake.
1900 Park Fare - all 5 of us were here. Mom told the CM checking us in who wrote it on the paper for the waitress. We had a terrible waitress that didn't come to our table more than 2 times during the meal, and she did nothing for the birthdays. No big deal.
LeCellier - now it's just DH and me for the rest of the trip. As we got our dessert sampler, they also brought out this HUGE free dessert for my birthday. It was a chocolate mousse thing in a dark chocolate bowl. So we had 4 desserts on our table.

It was really yummy and nice of them, as we didn't even tell them about the birthday in reservations or checking in. The waitress just noticed my birthday pin. Really nice.
Donald's Breakfastosaurus - We noted it was my birthday on this reservation when we made it and the CMs checking us in saw my birthday button and made sure it was noted to our server. He was a great server and they sang the birthday song to me (and the table next to me that was having birthdays too). And I got a card signed by the characters.
April 3 - My actual birthday! We ate at Kona for breakfast and they didn't do anything special. But boy was it yummy!!
For dinner we ate at CRT again, and they put the mickey confetti on the table. That was it, but that's all I really wanted since I already got the birthday stuff at CRT a few days earlier.
Our last day before we left we had breakfast at Crystal Palace. We had noted on this reservation that it was my birthday as well. They had the table set with the mickey confetti and swirly streamers. Tigger noticed and got really excited about it for me.

They also gave me a card signed by the characters -- really really cool! And a cupcake! It was nice.
It was such a special trip! It was really cool when they made it feel important, but not a big deal when they did nothing.