Anonymous wrote:Just put *adults only* at the bottom of the invitation
But be prepared for someone to inevitably not read that part and bring their kids anyway (or worse, choose to ignore it!). I once made a genuine mistake and brought my kids to a gathering at a neighbor's that I realized only after arrival was adults only. They had phrased the invite somewhat obliquely and I just didn't pick up on it.
My kids hung out upstairs and we stayed for only a brief time - luckily it was on our block so we could head out early without a lot of fuss.