How to write the invitation to the in-laws party the next day?

Do you invite relatives and friends or in-laws on blind date?

I'm afraid relatives and friends don't need to be invited, so they invite their in-laws. You can write like this:

We will prepare a light wine in XX Hotel (restaurant) on X (tomorrow), and invite Mr. and Mrs. XX and their relatives and friends to attend and talk about celebrating the coming day.

Please kindly request.

XXXX family