I emailed the CAS today and received a response. They are keeping track of candidates who are unable to get a space. You can add yourself to the list by emailing ACS@casact.org. I am not sure what will come of it, but surely they will need to make some accommodations. In addition to this list, I was also advised to look outside of my local area. Not that I have any intentions of crossing multiple state lines for this exam, but for fun I looked in the entire Northeast and was not able to find anything. Florida did have some openings though!