On this day, Thai people play with water, throwing it on each other. It's also a Thai custom that we respect senior citizens, so most Thai people go back to their hometowns to visit their grandparents to ask for good luck. In Thailand, we don't have specific customs for New Year's Eve. When the New Year comes, people just celebrate. A few days before New Year's Day, most people who have migrated from another city to the capital city of Thailand will go back to their own city in order to celebrate with their families.
Some families have fireworks, too.
In the morning on January 1st, children often ask for some blessings or wishes from their parents and grandparents, and both of them will give the children money, usually quite a lot of money. They give them new money. The children will use this money to buy whatever they want because they think when the New Year comes, everything should be new. New things are a good sign for starting life again. Most people think if their past time before New Year's was bad, the new year will bring them good luck, and they can start their life again.