May you enjoy every happiness!
ますますご繁栄を祈る
May prosperity continue to reign.
幾久しくご繁栄を祈る
ご多幸を祈って.
with best wishes=with every good wish
I wish you every happiness.
We wish you health and happiness.
I wish for your great happiness.
I wish you luck.
May his glorious reign last for ever!
I wish you every happiness (and prosperity).
I wish you success.