hmmmm....well, that is very discouraging to hear. I still find that hard to believe, given that some of the earlier dates in Oct are still available??? But thank you for posting what you heard!
eta: just when and checked online again, and Oct 9 still seems to have lots of availability, and given that that is part of the FAR busier Columbus Day weekend, I still think there is something messed up with regards to Oct 16 and 20th.
Something must be going on that weekend. Flights are priced higher that weekend and some of the flights are already sold out. Weird.