I moved to Pranburi/Hua Hin early this year for the wind & incredible scenery - still organizing my gear from Oz but it's a windfoil, windsurf & surfski paradise here
most people on kites or wings, but that is mainly about logistics of transport & storage, plus kites are way easier through shorebreak and over jjunk in the water - but plenty of foils out despite the extra challenges
windsurfers more common over at Jomtien, Amara shop & school
Xmas is monsoon season, breeze NE 10-25 knots from what I'm told, cross on, swell, and decent shorebreak - most beaches shelve gradually, so fin better than foil for launch - I will be out there by then on a variety of setups

so in summary it is an epic windsurf spot - for you, just the usual windsurf holiday challenges of lucking the weather, having the right gear, and getting it to the beach - would you BYO kit? you fin or foil or both?
kiting has so many advantages, but just not my thing!!

see you later in the year
cheers
Peter