Save the dates question

Tim & Ash

Do I put "& Guest" or children's names on the save the date envelope?

Anabeth420

Nope. Not necessary.

slbriz34

S-T-Ds should only be sent/directed to those guests you want to keep the date open.  Guests that'll be added later will be at the discretion of your invitee, so it's not necessary or required to add them.  Children aren't required; they will sort of be assumed with the parents, unless you aren't having a child-friendly affair.