For my Dad's 65th birthday, my family got together to celebrate. We met at a duck pond near their house to feed the geese and to play a little at the playground. Afterwards, we went back to my parent's house to open presents to eat.
For my Dad's birthday, we surprised everyone with our announcement. Clara walked in wearing a "Big Sister To Be" t-shirt carrying a present: a picture frame with our latest sonogram inside with the saying "See you in February Grandpa!" It was great to surprise everyone. (It's funny, three years ago, for my Dad's birthday, we surprised everyone with our announcement of Clara - we told Dad NOT to expect this announcement every three years :)