If it were my guild, it would be appropriate to bring up these issues. If we had "secondary" conversations going on during meetings, the speaker would just stop talking - wait until the individuals who were talking concluded, then begin again. Other times, we would just speak out and ask them to wait until break time. Other times, the speaker would state, "we need to have one meeting at a time going on."
As for young children at guild, it could present a safety hazard if sewing/scissors are being used, and that would be a good way to insert something in the by-laws regarding safety, and that it young children are not to be brought to meetings.