Rehearsal Save The Date Wording

This is confusing. The STD is not the actual invitation so there shouldn't be any inserts. The RD is usually held the night before the wedding and only includes the immediate family, wedding party and their spouses/SO, and sometimes (though not often anymore) out of town guests. If you are sending an actual RD invitation, these usually go out after the wedding invitation to those select people, or you spread the news via word of mouth, email or text.

I understand that this is not normally a "thing", believe me. However, my future in laws are asking me to do this for them. I'm simply looking for wording advice as I have, obviously, never seen something like this.

I really would rather not go into the reasons why they are asking me to do this, and I can't imagine how that would assist anyone in offering wording suggestions, and that is all I'm asking for.

Hmm, this is a tough one because there usually isn't a lot of information on a STD. Perhaps something put RD: date slightly smaller, and either above or below the actual wedding date?

I wouldn’t send it with STD’s, maybe in the actual wedding invitation.

Perhaps print business card in a scheme to match your save the dates with the information

“The rehearsal dinner is to be help MM/DD. Please save this date as well. Invitation to follow.”

im not sure as the whole thing is slightly odd, but if it pleases the inlaws I don’t see it as an issue

So far, what my fiance and I have come up with is

"Please join us for a Rehearsal Dinner
(date)
Invitation and Details to follow
Transportation from (Rehearsal Location) will be provided
Hosted by (In-Law Names)"

Mind you, that's pared down from my future mother-in-law's suggestion of

"Save the Date
Rehearsal Dinner
Please plan to join us for a Dinner following the Wedding Rehearsal
(Date) appx 6:00 to 9:00 pm
Details and RSVP request to follow
Shuttles/rides from the (Rehearsal Location) provided
Hosted by (In-Law Names)"

Not all who are getting our save the dates will be invited to the rehearsal dinner, so adding it to the save the date itself would be, in my opinion, rather poor taste. Moreover, we've already designed, printed, and die-cut our save the dates, so we are definitely not going through the hassle of redoing them.

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Yeah, that's how I'm approaching this. Just a small insert with the pertinent info, because it really isn't worth kicking a fuss over, especially as Mom-In-Law to be is reimbursing us for time and materials and all.

You could have an insert that says...
The Night Before, we ask you to save the date and help us kick off the wedding weekend with a dinner...formal invitation to follow”
or something along those lines.

it may seem odd, but if you have a lot of out of town guests or a destination wedding, it’s helpful for people to know when the actual wedding events are going to start rather than finding out a month before.

my wedding is in 2 weeks and I ended up emailing a lot of people a few months ago to give them a heads up on all the other event invites they would get for the weekend so they knew before they booked tickets and hotels.

Are you inviting more than just the wedding party to rehearsal dinner? We are having a welcome party but didn’t put any info on save the dates but rather listed it and the info on our wedding website.

@Melanie Yeah, I understand my future mom-in-law's reasons for wanting this in addition to a proper invitation to the rehearsal dinner. Pretty much everyone is from out of town, so the heads up certainly won't hurt.

@Kelly My future in-laws are generously inviting all of our out-of-town family members as well as the wedding party.