I know there is a window as to when you can release rooms without being penalized but I am not exactly sure when that is. I definitely want to do a room block to gurantee a room rate. There are some people I am sure that would go and some that I think wouldn't, but at the same time I may be surprised as to who comes and who doesn't. If I had my wedding in L.A. it would be around 200 people many traveling from Ireland, Canada, SanFrancisco. 122 of my guest list were family alone from both me and my FI but mostly my FI. Its hard to work on a budget when I am unsure how many people I am working with.
jess