Talked to a buddy I know from scheduling. Here's the scoop. Apparently, there will be airport standbys, but they won't be added until GOC tells them what they want for the next launch based on what, if any, spare jets they expect to have. Apparently for the am launch, that means the call won't be made until 11pm or so the night before, and for the afternoon, sometime earlier that same day. The idea is to increase reserve utilization rather than having them snatched out of open time, especially when on some nights they have 2 or 3 standbys for some equipment types, and 1 or no spare planes of that equipment type.