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).
Lodging info can go on a wedding website or on an insert with the STD. I'd chose the RSVP date based on the date the caterer, venue, etc needs a head count. Add at least a week to let those last minute RSVPs come in and for you to call folks who did not answer.