When did everyone start contacting hotels about reserving blocks of rooms? Also, I have heard that some hotels will offer a free room if a certain number of guests book under the block of rooms...for those of you who are already married or getting close to your wedding date, did you get any perks like this? Also, any tips for estimating how many rooms you will need? Most of my guests are from MN, but it would be a bit of a drive for a good portion of our family (~2 hours or so) so I'm guessing at least some of them would get a hotel. Thanks in advance for any thoughts!