Is there no disposable slippers in the hotel to complain about?

Of course. According to the relevant public information, the hotel does not provide disposable slippers, so you can complain to the hotel front desk or ask for disposable slippers. Under normal circumstances, the hotel front desk will cooperate with the requirements to provide disposable slippers and other related supplies. If the front desk of the hotel does not actively cooperate, you can ask to communicate with the person in charge or manager and submit a written complaint to the relevant departments of the hotel.