After reaching full grade, if there are too many customers, there will be no bad reviews. If the breakfast shop is to be upgraded, it needs to be in the big slot, and the small slot cannot be upgraded. If there are other shops in the big trough, it needs to be recycled and then a small restaurant will be built in the big trough.
Brief introduction of landlord's simulated restaurant.
Before your restaurant is upgraded to a "Chinese restaurant", try not to recruit tenants who need to eat, because the "breakfast stall" can't fully meet their needs and will give bad reviews. After the restaurant is upgraded, the employees recruited before the upgrade will leave and need to be re-recruited. So don't be too many employees before upgrading, you will lose money. Career balance is very important. If you have too many people in a certain occupation, it may lead to unsatisfied needs and bad reviews, thus reducing your income.