Should I address them as I would a wedding invitation without an inner envelope?
For example:
Mr. and Mrs. Andrew Jones
Bobby, Carol, and Susan
123 Main Street
New York, New York 12345
I think I'm just having a hard time with the families. Since STDs are less formal, should I also be less formal with the addresses? And do this instead?
Mr. and Mrs. Jones and family
123 Main Street
New York, New York 12345
Or is the above example opening myself up to someone's very liberal interpretation of who their family is?