Just realized that Rivers of Light is actually a seated show, and I don't have a FP. Tried to trade out my Everest FP for RoL, but it's no longer available. Is standby doable? How early will I have to line up in the standby queue? I have two kids under 10, so standing around to wait for a show is not ideal. I'll be visiting on a lower crowd day - projected crowd level is 3.