Excellent thread for me to figure this out in.

David
Mom
Step-dad, Jerry
Mother-in-law, Nelda
Father-in-law, Andy
Sister-in-law, Rachel
Bother-in-law, Casey
Niece, Isabella
Grandma
Friends and co-workers

Family: 9
Friends/co-workers: at least 10

So, about 19 people plus the furkids