The Thai government will allow sale of alcohol throughout the 4-day Songkran festival in order to boost the flagging tourism industry.  The National Committee for Alcohol Consumption Control decided in a meeting that the pros of allowing alcohol sale far outweigh the cons. An alcohol ban would drive away foreign tourists during one of Thailand's most popular festivals, and might also increase sales of illegal liquors. The sale of alcohol during Songkran will be in line with existing regulations, allowing alcohol sale from 11am until 2pm, and 5pm until midnight. The government will launch several anti-alcohol campaigns to discourage drinking and driving and drinking on the back of pick-up trucks. 
Bangkok Post