We went on a long weekend to celebrate my 50th. I am the opposite of the OP because I don't want attention. It embarrasses me. In fact, my family wanted to throw me a party so I told my husband that it was the last thing I wanted, and I would much rather go to Disney.
I did not wear a button or mention it to anyone while we were there. The only thing I did do was have it noted on our resort reservation and that was mostly because the CM on the phone booking the room asked if we were celebrating anything.
I asked for a specific section in the resort and got my request. No upgrade, but they gave us a beautiful corner room. I kinda thought that may have been a nod from WDW for my birthday, but they've always been great with granting our room requests.
To each, her own, but the thought of birthday cupcakes and waitstaff singing to me makes me cringe. I was a bride once, and that was enough attention to last a lifetime.