I don't know about Chef Mickeys but I definitely do not recommend O'hanas. Ohanas is my daughter's favorite restaurant and so when we were there last Dec. we decided we would celebrate her 12th birthday there. I called in advance and asked if they did anything special for birthdays. The woman who answered said that they didn't. However, when we checked in, another parent was giving information about her son's birthday. I then told the hostess that it was my daughter's birthday too. The hostess said, that my daughter would get a special dessert.
Well, after our meal, the waitress brought over a cupcake and said, "Sorry, I don't sing." I replied, "Then we will." Also during this time there was a man playing a ukelele (sp) singing "Happy Birthday" to patrons. The waitress didn't even tell the man to come to our table. Needless to say, we weren't happy with Ohana's this time.
Anyway, the moral is --- if anyone tells you that they don't do anything for birthdays -- ask and ask again. I can't imagine any restaurant at DW not. Also, in hindsight, I wish I would of talked to the manager, the waitress really gave us a bad impression of this restaurant.