"Happy birthday" in Japanese
Ohayo gozaimasu!
How to write "Happy birthday! The best wishes to you!" to a person (who is older and has higher rank than you) in Japanese?
Arigato gozaimasu!

Question

"Happy birthday" in Japanese
Ohayo gozaimasu! 
How to write "Happy birthday! The best wishes to you!" to a person (who is older and has higher rank than you)  in Japanese? 
Arigato gozaimasu!

Answer

A shorter but still polite way to say is "お誕生日おめでとうございます。どうぞ良い一年をお過ごしください。"

Also, when you say "thanks in advance", よろしくお願いします is more natural ;)

Answer

If I try to say something that is close to your wishes in English, for example, 「お誕生日おめでとうございます。この一年が、（the person's name）様にとって、たくさんの幸福に満ちた日々でありますように。」

I hope this helps.