It is open- not restricted.
I think it would be helpful- for those who are planning to attend
if there was a singular spot (with a link?) where everyone can look for all details- name list of who's going (headcount) etc...
What preparations have already been taken care of - what times- the map- etc...
Right now it seems kinda hodge podge

I personally, don't know who's blog is where or what anyway (although I'll most likely not be there) and I think that it would probably easier to have an accurate headcount and less confusion if there was one good spot where everyone can confer.