Didn't have one, don't regret it, usually don't go to ones I am invited to.
I figure what, will all the kids parties, concerts, playgroups and full time work, my weekends are already full enough.
I like to buy something for mum and bubs after the birth, take a cake, have a coffee, shoot the **** one on one.
KWIM
Hope you get the day you want though PZ.