Welcome to the DIS!!!
WDW is a fantastic place to spend a birthday,they make you feel special, no matter how old you're turning!! The 2 meals sound like fun! Be sure to tell them it's your childs birthday when you're being seated.
At the MK goto Guest Relations and they'll give you a birthday badge.
If you're staying on property tell them at check in what the birthdays are and for who and they'll do something special that day.
My fiance, Joe, and I spent both our b-days at WDW last year.For his in May we were at the AKL ,we went just the two of us.On his BD he had a card from Mickey and a phone call from Goofy.We were in MGM and buying a beer at a walk up place outside ToT and RnR.I told them they better card him because it was his birthday.Well all the CM's in the place began singing HB to Joe...it was priceless! They also gave him a free ice cream...really goes with beer!! LOL!!
In July we stayed at CS and had our 2 boys with us.Everywhere we went Jonathan,Joe's son, was telling them it was my BD then Erich started!! Can't let his step bro get ahead of him!!
I got a free margarita somewhere,ice cream another,it was fun and the boys enjoyed embarrassing me!!
When we got back to our room there were balloons and a card from Mickey courtesy of the wonderful hotel.
WDW is magical anytime but the CMs really go out of their way to make you feel wonderful on your day!
Have a great trip and let us know how it went!