Bröllopshälsning på engelska?? Bröllop i Hong kong

Soory I can't speak Swedish very well-just read this website through Google translate..English I do know!!
You could write
Congratulations on your wedding, wishing you every happiness and joy in the future!
or
Congratulations to a fabulous couple, wishing you every  joy and happiness in your new adventure as a married couple! 
Enjoy Hong Kong-bet it's amazing