Save the dates

Ours didn’t say formal invitation to follow and we didn’t have any issues. I wouldn’t worry much about it.

Ours didn’t say formal invite to follow either. Save the dates generally say very clearly to save the date. They don’t have detailed information such as times and whatnot. I’m sure once your official invited go out, they’ll be able to figure out how to respond. If they call or text before that, simply tell them to hold their responses until the invites go out and to return the rsvp card. While his family may have untraditional methods of responding, I’m sure they’ve all been invited to weddings outside the family before and can figure this out. Try not to stress over it!

Ours didn't say anything like that either - just to save the date and to visit our wedding website for additional information. I wouldn't worry too much about it - worst case you'll get questions asking about details, and you can just tell them they'll get an invitation in the future.

Ours said "formal invite to follow" but not "save the date" on the front. Several people on my husband's side didn't realize it wasn't the invite. It's common for groups that aren't as familiar with more formal weddings to not realize what it is. Don't worry about it!

As PPs said, I wouldn't stress over this! They'll get their formal invite eventually and be okay

I wouldnt stress it too much. most people know that a formal invite will come.