According to Kyodo News, via the Imperial Household Agency, the crown prince will stay “… two nights in each of the capitals of the three countries — Thailand, Cambodia and Laos — he will visit.”
Any way, upon his arrival at Don Mueang airport in Thailand, Crown Prince Naruhito was greeted by government dignitaries and the press. Soon, the future emperor of Japan was at Government House in Bangkok where the Prime Minister of Thailand, Ms. Yingluck Shinawatra, hosted a reception in his honor.
Afterward, the crown prince was at the Grand Palace where he had a meeting with His Majesty King Bhumibol Adulyadej and Queen Sirikit of Thailand.
Source: Kyodo News via the Imperial Household Agency