If you've been, you'll know what I mean. It wafts up from the metro and consists of: blocked drains 30 per cent. something like burnt paper, about 20 per cent.
Guests should have at least four weeks to consider the invitation before the RSVP-by date, which, in turn, is usually one to two weeks before the wedding (ask your caterers when they need a final count).
Now, the RSVP deadline is a tricky subject when it comes to destination weddings. I wrote an entire post that breaks down when you should send out save-the-dates and invitations for both the destination wedding and At-home wedding reception, as well as RSVP deadlines.