Dear Vince:
Yes, most all of us weigh less in the morning.
The last several years, for various reasons, I have been to the Expo Center early on Saturday morning, and it is eerily quiet. I have only seen Leanna and last year Leanna and her youngest son. I did not see anyone working the weigh in, however, since my children always made weight on Friday, I did not peek inside the curtains.
Remember, these are volunteers, not paid employees. The volunteers have a right to a relaxed early morning after a hectic Friday evening.