I'm glad that you enjoyed my submission! For the load button, it does work, I should've explained it somewhere within the menus but after each day your progress gets saved (After each day, not meal). So the things that get saved are your current money, the current level, and your highscore.
I also did want to make it so you can reject orders while the chef is still speaking, but during development I was running into some bugs that happened as a result of that, and due to the time constraint I couldn't fix it so I locked the button so you could only click it after the chef was done their dialogue.
I will definitely consider having more accessible options like the MM/DD or DD/MM stuff for future projects too!