I do not recall ever doing that.
The idea is a bit 'tarded.
1. prepare lots of food and alcohol
2. invite people you like
3. forbid people you do not like from coming
4. they eat, get drunk and talk while sitting at a table
5. social circle for the next year is established, now you need to come to other member's next b-day "party". Don't forget about presents for extra re-enforcement!
meh bleh. Dog bless working from home.