I am sending out Brooke's birthday invites today so I am addressing the envelopes. I have not done this in awhile so I am a little confused. The one I am getting ready to address is to DH's Aunt and Uncle. We called them both by their first names so should I address it to You and You Lastname, and Family? Or Mrs. and Mrs. Lastname, and Family?
Re: How to address envelopes?
This. Keep it casual.
Same here. It's pretty informal. The only time I really use Mr. and Mrs. are for people that I don't know all that well (friends of ILs that sent baby gifts, for example). Otherwise, I keep it informal.
I usually put "The Brady Family" on the envelope. This is when the whole family who lives at that address is invited.
If only certain people at that address is invited then I put their names as I call them. Aunt Peggy and Uncle Dan Smith or Peggy and Dan Smith.
Unless it's a wedding don't worry about formality.