You can grind postgame. I wouldn’t say there’s no progression… upgrading everything and everyone to the max would take a huge amount of money. I played for a few days after the end of the game but I was pretty much ready to move on from the game at that point. Absolutely loved it though… it’s worth picking up.

you can grind to upgrade your staff and business, there are reocurring events in which you can prepare special dishes to earn more money, maxing out characters takes a few postgame days