Yes. It is a noun, therefore should be capitalized.
no
1
RSVP is a French phrase Repondez s'il vous plait, meaning ' please reply ' RSVP to.......
No but you can call them and ask them if they are coming but you should demand an "for sure" RSVP.
Yes. It is a proper noun.
It's R.S.V.P that's how I wrote it on my wedding invitations!
RSVP by Close of Business.
Anyone who receives an invitation, addressed to them, and containing RSVP, with or without a response card, should reply. If the invitation is for you and your spouse/significant other and/or your children, then one person should respond and include the number of persons in your party.
RSVP Gallery was created in 2009.
No, unless it's the start of the sentence or it's a proper noun.
Yes