It's a non point right now, as we have a couple of years to go yet. However, am interested if it's the 'done thing'?
I've seen quite a few threads saying it's not OK to do it, and no one cares as it's not seen as a 'special' one.
I think it is though, and love a good celebration. We don't get enough of them in this lifetime I think 
WIBU to do something special? Party / meal / something else. Has anyone else done something nice to celebrate? Or attended one they enjoyed?