Jacket Required... But I don't want to tell adults how to dress

If you feel uncomfortable saying that to your guests, I believe that most restaurants that require jackets have extra jackets to loan out in the event that someone shows up without one. Maybe call and ask

How awkward, though!

I would just put a note on the invite that the restaurant requires a jacket for men and leave it.

That seems pretty fancy! I'd just copy exactly what the restaurant says is their dress code. They're adults, they know how to google. Haha!

Dress code for a restaurant is fine, you can put it on there. "Venue/Location/Restaurant requires.... "

Making up your own is the dick move, so you're fine.

I think if the place requires it, that's okay. It's just annoying when people are instructed what to wear just because.

If it's a well known restaurant, it may be that folks will already know it as a fancier place. I know if I am going somewhere new, I'll do a quick google and yelp search which generally will provide dress code information.

There's always word of mouth as well. You and FH know your guests best, and know who may not "get the memo" on the dress code, and can follow up with them individually/discreetly beforehand.

Agree with @m. Just specify that the venue requires it. The guests will actually appreciate being informed.

Thanks for the tip @Kristi I will definitely call for a just in case situation.

I like the suggestion of "restaurant requires..."

Miniature freak out over! Thanks everyone!

There is nothing wrong with telling adults what the dress guidelines are. I personally greatly appreciate knowing if something is casual, business casual, dressy, etc.

The only time it is inappropriate is when you want everyone to wear the same color, or every woman in a dress, when there's no reason. But a restaurant dress code is completely fine.

Even having said that, a themed wedding like a masquerade ball or a black and white ball are perfectly acceptable too--if the event lives up to what it promises, I am more than willing to adhere to a style of dress

It's better to let them know them venue requires it than have them not allowed in because they didn't dress accordingly.

Invitations for a rehearsal dinner ?

Invitations for a rehearsal dinner ?

In this case, since the restaurant requires it, I think you're fine to say something about "the restaurant's dress code requires..." Others have probably phrased it better already.