What should I do if the hotel changes shifts before and after the night trial?

It doesn't matter if you change shifts. The key depends on whether the handover report is consistent with the computer and the bill. The branch must conduct systematic night trial before 3am, and the night trial or all-night trial after 3am will be punished.

Change it. You work slowly, so do your working hours. You can do whatever you want. Anyway, it is ok to earn enough money. If someone gives you a tune, you can adjust it.