@Sara7522 The quality of communication is a better predictor of how the guest will be than reviews (which are often misleading), but the only chance to take advantage of this is in the request process. After you've accepted the booking, the guests should be expected to answer any time-sensitive questions you have, such as when they'll be arriving. But not everyone feels that it's necessary to reply to a message that's just giving info.
A bigger concern here is that Airbnb's Nondiscrimination policy prohibits discrimination based on your guests' family status. You don't have the right to insist that a group be related to each other or contain children. So your listed occupancy limit should reflect the number of adult guests you can accommodate, and whether they fit your personal definition of "family" should not be relevant to the booking.