And yet another voice for not expecting anything special to happen. Everyone seems to be celebrating something while in WDW. Yes, we have all heard of those who got front of the line access because of their birthday buttons, or free food, or fastpasses, or flowers or whatever. But, I will say that the two times my dd has been in WDW on her actual birthday, other than a few 'happy birthdays' from other guests and some CMs, she got no special notice. Everything that she got I had prearranged.
You know, it's funny but I know a guy who went to WDW, for the first time, with his extended family a year or so ago. He was about 45 at the time. He wore a 'this is my first trip' button. I told him how nice it looked. Know what he told me??? He told me, and I quote..'Wearing this button is going to get me special stuff, like food and prizes!' He truly believed that...not sure who told him that. And, of course, not one single thing happened to him.
The internet has made everyone feel like they are missing out if they don't get the same experience others have gotten. I hope your friend gets some special notice but don't be surprised if it doesn't happen.