Help! How to phrase no children at the wedding?

We addressed the envelopes to the specific guests involved (Mr. and Mrs. X), had our paper goods vendor write their names onto the RSVP, and also included the number of seats reserved for them. No one tried to alter the RSVPs or include their kids.

Don't put this on the invites. Address the invite to the people in the household who are invited. i.e. Joe and Jane Smith. Not The Smith Family.

We did "2 seats have been reserved in your honor". It worked for the most part, two guests asked before sending their RSVP. Another decided she rather bring her 8yr old instead of her husband... So I did have to send her a text saying we couldn't accommodate kids.

As above.

- address the invitations to those who are invited. Don't tell people who is not invited.

-include the number of seats reserved on the rsvp card.

-If people change the number you will have to contact them and tell them " There must have been a misunderstanding. The invitation is for __ and ___. We are unable to accommodate extra guests. If this means you will be unable to attend, we will miss you at the wedding."

- If you are having a website you could include a reference to an "adult reception".

We didn't put it on the invites. But we did put it on the website where they had to go to rsvp. And we addressed the invite only to the adults invited. However I will say that people (family in particular) seem to think that surely they're the exception to this and you didn't mean THEIR kids. Lots of that happening with our closer relatives. We did address it directly with them, but it was quite funny and predictable who was going to think they were special.

ETA: we said "while we love your children, this is an adults only event"

We put it on our website, and only 1 person has complained about it (besides my dad who SWEARS my great niece is walking with him and I)

This is how we worded our reception card

I wouldn't put anything on the website about it being an adults only reception because it's not - you have some children coming, just not all children coming.

Just follow the instructions about addressing to the adults and follow up with anyone who adds them on to the RSVP

"We love children and hopefully will have our own someday, but we would like to celebrate our special day with our favorite adults"

Also, Update the invites to only invite who you want to be there.

Here's one I saw on Pinterest

"Adult reception"

I don't think saying adult reception works when there will be five young children there. However, inviting the adults by name still works and correct them if they try to up the number on their RSVP.