"I know someone suggested in an earlier thread that maybe Ms. Williams, at her age, may have "forgotten" about the Holiday Queen."

I saw this post and IMO they were dead wrong.

The Burt records only prove the chips were delivered. IMO, the re-order proves they were on the tables.
It is quite possible the casino was about to open when the name problems came along. They could very well have used the chips for a year while they were re-logoing.
If I remember right no one pressed Ms Williams after she said what she said. If we had told her about the chips we had, she might have been able to answer why we had them.