上海世博局新闻发言人表示，虽然世博会会期长达184天，但由于参观者基数较大，如大量游客都选择后期参观，则会出现客流过于集中、园区场馆十分拥挤的现象，势必影响每位游客的参观效果,建议持有世博门票的参观者合理安排观展时间。
　　The organizer of the 2010 World Expo yesterday recommended Expo ticket holders should replan their visits to avoid overcrowding near the end of the fair.
　　The suggestion was made due to a fall in visitors yesterday to 85,564, the least since the Expo officially opened on May 1.
　　The World Expo's fourth day, the first for which standard day tickets applied, attracted more than 140,000 visitors, beating the previous day's 131,700 but fewer than anticipated.
　　An Expo Bureau press official said yesterday that if large numbers of visitors intend to visit the site later, overcrowding can't be avoided, therefore, the organizer urges people to reschedule.
　　By May 4, over 33.11 million tickets had been sold. With free tickets given by the Shanghai government to every household, the potential number of visitors is more than 40 million.