There are two systems in the sports canteen, one is to swipe the card (special for schools), and the other is to exchange cash for meal tickets, so you can eat in cash both inside and outside the school.

As for the gym, I stayed in Sport University for two years and found four. Even we non-sports students can only enter 1. You don't need a student ID card to enter the gym. As long as the time to go does not conflict with the class, who can be divided inside and outside the school? You can leave if you want. But there will be more people.

Again, only 1 gym can enter at will.

Looking forward to your arrival.