I was able to get into the reservation system using the link provided here, to the point of choosing a date and time slot. But we've decided that it's not worth activating our APs 3 months earlier than planned for this one preview, so I won't be reserving any time slots. Instead, we will take our chances with the last day of 6-9 AM EEMH when we arrive for our week long trip at the beginning of November. For the rest of you, "May the Force be with you!"