Ideally i'd wish you it in Thai but my language skills dont reach as far... Yet. Nor does my guide book tell me such phrasings, the best I can do is "Chok dii" which means "Good luck/Cheers".
What are you now, 28? I somehow never seem to remember how many years older you are than me... :-/
Have a good one! See you soon (but not too soon). X