Actually, the more passengers there are, the worse they sell, because the aisles in the carriages are completely full, meaning the servers just can't make their way through to make their sales. If they tried to make their way through the crowds, they would get little more than dirty looks, so they simply suspend the service over those periods.
事實上，旅客愈多，反而便當愈不好推銷，因為整個走道擠滿了人潮，服務人員根本無法進入兜售，如果硬擠進去，還會遭到旅客白眼，只好暫停供應。