I read with amusement on your reader, Paul’s, complaint of seated passenger drinking water on MRT train. Yes, it is an offence to drink on MRT train according to Rail Transist System regulation. But there are people who are sick and suffer from sore throat who needs to be constantly hydrated while on their way home to rest.
The reason for the ban is to avoid inconvenience or injury to other passengers caused by spills. If the person drinking did not cause any spills, is there a reason to kick up a fuss?
If such a ban is to be enforced, the LTA should provide a water point inside every station so that a thirsty passenger can drink without exiting the station midway through an arduous train journey. Then any spills should be limited to a small corner inside the train station where consumption is allowed.
Othewise, the authority should allow some flexibility for commuters to hydrate themselves during the long journey to work or home.