sheet

Hello. In Las Vegas an exhibition was shown a sheet of paper was lifted from the bottom, on which waiters wrote orders. The date, table number and one more item were written on it. Who can help me understand what it is?

I'm going to state right away that I know without a doubt that Titanic and Olympic were NOT switched. I just wanted to post this photo of the recapitulation sheet from the passenger manifests from Queenstown, as it is odd how Olympic was scratched out and Titanic written in it's place. Dates...