I was there a couple weeks ago. They let us through security and turn styles around 6:45 AM. Before they let you go through security, they checked that you had a room key or reservation. Once through the tap-stiles, they had two rope drop spots, one at the Grizzly Bear and one over towards Soarin'.
We did the one near Soarin to go to Guardians. At about 7:20 they let us go where we got in another line to check hotel reservations again near Animation Academy. We were joined here by guests that came in through the regular park tap-stiles. They had a line for hotel guests and a regular rope for non-hotel guests.
We didn't do the Grizzly Bear one, but the lady said that one would be let go at 7:30.