Im so confused about rsvp dates on stds and invites! Do you mean that your guests will have to decide if they are going 3 months after they get the STD? How did you word the "90 days to book deadline" on the STDs?
Also, if you are getting married in January 2015, what rsvp date will you put on your invitation? What's the point if people have already decided after receiving the STD?
I sent out postcards in December letting them know we were doing a destination wedding and that we understood that it is timely and costly and if they couldn't come we fully understood we also gave them the location we were looking at and a rough cost budget $1,100-1,500 and that once my FI and I down our deposit theirs would have to be put down within 90 days of us putting ours down to lock in their rate and save a seat/room We also let them know that if they do want to come but money is an issue they could always try last minute or a different hotel to save on money.
I ask them to call or email my FI or I to let us know if they wanted to be included in the group rate. We pretty much sent it to people we knew that would come (family and friends) and then in June or July this year we will send out regular wedding invitations to everyone who we would have invited to a wedding in our city just so they don't feel left out but we know they won't come.
As for RSVP we aren't putting one because people can book last minute but we are including a note card that states all the details again hotel price travel agent.
I'm not at my computer but I will send out wording on our postcard once I get to it.