Weddingbee boards

I wasn't planning on doing room blocks for our guests, as there are a million hotels in the area of the church (but only 2 within 5 miles of the reception!) and i didn't want to be stuck paying for rooms that went unbooked.

Today my mom asked me to book her hotel room (she and technology do not get along or understand each other). When I called the hotel, the owner said that she'd set up a discount (not a block,) under our wedding name to give any guests who want it a 10% discount (good for booking all the way up to the day of!) AND a $15 gift card for use at their cafe! I couldn't pass such an awesome deal for my guests up and set up the discount.

But how do I tell my older guests? The younger ones I just e-mailed (easy and done!) and I know they won't be annoyed or upset by getting information about the wedding in such a way. Do I call people and let them know? Our RSVP due date is looming (5 days away!) and we're missing some 80% of RSVPs. If I call with this information, will my guests be upset that I am persuming attendance? But if I don't call them, then how to spread word of this great deal? Anyone have any suggestions?

If you have a wedding website, use that to post the information.

Otherwise, use word of mouth.  I wouldn't call to tell people about this unless you talk to them on a regular or semi regular basis.