Thank you for your kind invitation
It is RSVP
Any good stationary or card shop will sell you a suitable RSVP card. Having said that you do not need to buy one, just write a short letter or send a post card, e mail or text.
Yes, it is.
Anything you want to say
RSVP
Introduction is the paragraph(s) that starts a text, conclusion is the paragraph(s) that ends a text.
Write what the invitation is about. Write what you need to bring, who's it for, where, what time, if you need to RSVP, and what date, if there is a theme and other informative information.
RSVP is a French phrase Repondez s'il vous plait, meaning ' please reply ' RSVP to.......
Do not try to write the introduction to your paper first.
"Repondez s'il vous plait" is French for "please respond". So on invitations never write "Please RSVP" because you will be asking the invitee to "Please please respond".
Presumably there is a designated organizer for this event. Write , call , e-mail or in person. RSVP with the number of people , including yourself.
RSVP stands for the French phrase: Repondez s'il vous plait. It means please answer.