We were inviting the parents of a group of family friends to the wedding, but not their kids. Now that our "reception" has become less formal we'd like to expand the guest list and invite the kids. (The "kids" are all older than me, just FYI.) It's sort of a weird situation but they all live together - mom, dad, and the four kids with their spouses or partners (and their children).
I was going to send them all an individual invite to the same address and asked my mom for the names of all their partners. She thinks it's fine to send one invite addressed to the parents "and family." That would definitely be easier than sending five invites to one address but not sure if it's etiquette-approved. Technically, this is not a wedding invitation, just a party invite. (No ceremony redo or formalized reception-related events or anything.)
Thoughts?