You may say 'goshoukai arigatou gozaimasu.'
you say:"Thank you so much for this invitation"
Thank you for the invitation is right.
merci madame or monsieur
It is correct English to say "thank someone for something" eg "My wife and I thank you for your kind invitation to your daughter's wedding"
To say old Japanese illustrations in Japanese, you say "Mukashi no Nihon no irasuto".
SAY iam praying from God keep you for me, forever.
otta-gotto
In Japanese, you can say "Arigatou gozaimasu, LaPi-san" to say "Thank you, Mr. LaPi".
Don't thank the person when you receive the invitation, but send them a nice Thank You Card after the event and let them know you were honored to be invited and had a wonderful time.
You can respond to the invite by expressing your gratitude and confirming your attendance. For example, you might say, "Thank you for the invitation! I am delighted to accept and look forward to attending." If you're unable to attend, you can say, "Thank you for the invite; unfortunately, I won't be able to make it, but I appreciate the invitation."
senkai arigato but Japanese would never say this just domo arigato gozaimashita is best
To reply to an invitation in German, you can say "Danke für die Einladung!" (Thank you for the invitation!). If you want to accept, you can add "Ich komme gerne" (I would love to come). If you need to decline, you can say "Leider kann ich nicht kommen" (Unfortunately, I can't come).