My instinctive answer is that the parks should be fairly manageable, especially on the weekdays. At this point, the best guess is that HallowwenTime won't start unto Friday the 12th. I would expect high crowds that weekend due to HalloweenTime (and Dapper Days), but prior to that, my guess is that it won't be as at because some Halloween won't be in full swing (i.e., HM will still be closed, Big thunder Carnival won't be open, and Space will be down (from probably Monday, the 8th)). I agee that the most popular rides will still have lines and wouldn't expect to walk on to many rides, but I also wouldn't expect super long lines for all rides.