How do friends manage business and collect money?

Give a discount or more things, give them to friends for free a few days before opening, and then charge a membership card or something.

But remember one thing: you open a shop to make money.

Besides, not all people have a good relationship. Once you set a precedent, you will be in trouble. Everyone here will ask you some opinions, and it is even more difficult to discuss them clearly. . .

Didn't you say that your brothers knew the accounts well? Money can be too generous, and it is you who suffer. . . .