We did rope drop on Monday..took 10 mins to walk on entrance from frontier land entrance at 9am...10 minute queue and back off by 9.30am. lots of people running and going through adventure land entrance to try and get ahead but we just walked with the crowd and was fine.This far the only entrance they seem to open first thing is the one in Critter Country. It sounds like people wait near both the ropes for Adventureland and Frontierland in the hub and then when park opens both entrances are funneled toward the Critter Country entrance.
That said, it sounds like rope drop is one of the busiest times to visit SWGE and you're better off to head over after the morning rush dies down.
We also queued this afternoon and the party of 3 with us complained just before boarding that they hadn't been given pilot so we rode just as a 3 which was a bit weird. Not sure what happened to them!