1. The average consumption of students and the corresponding proportion, the level of average consumption determines your direction.

Generally speaking, if the consumption is high, your corresponding cost will be high, so the risk will increase accordingly.

2. If the school allows, you must buy alcohol and tobacco ... (It seems a bit unkind ...)

3. Be prepared for the following business: If it is near the playground, cold drinks are essential. Students should have some stationery, but don't suggest too much. After all, the profit rate is not high, but it can give students the opportunity of incidental consumption. ..