What items are not included in hotels in Singapore? Can I listen to MP4 on the plane?

Singapore hotels do not provide toothpaste, soap, shampoo, toothbrushes, and some do not have slippers. It is what is commonly known as the small five pieces.

When the plane takes off and lands, the flight attendant will advise you to turn off your MP4, mainly because you are afraid that you will not hear the emergency broadcast. It doesn't matter at other times. As long as your MP4 does not have mobile phone function.