As you will be arriving in Thailand At Suvarnabhumi Airport ( Bangkok ) you have a few options. You can get your own Taxi but the problem is the drivers don't speak very good English and have poor knowledge of where they are going once they leave Bangkok, or you can collect a hire car and drive down, takes about 3 and a half hours, but if your not used to driving here it can be a bit overwhelming, you can take the Airport Link bus, direct from the arrivals terminal to Hua Hin, non stop, luxury, air conditioned, toilet on board, or I can arrange a Taxi or Mini Bus to collect you.