@lou lou. Good luck to your final exams!
The school schedule sounded very intense.
You mentioned booth observation, what you need to do? And what difficulties you faced? How many days the school sent you for booth observation? What do you do when you need to use bathroom during your shift? How long is the lunch break? Did you have down time when you did booth observation? If you've down time, what do you do? Also, are you able to pick what booth and shift you going to work at? if you don't mind, which borough you live and what station you prefer?