Nope. If you had any PPO ADR you were allowed in the park before 8am. Everyone with a ticket is allowed to go all the way to the hub at 8 these days. If you had any sort of PPO BOG ADR you were allowed to check in to the restaurant before your reservation if you wished.
So, if things stay the same all the way until October, OP will be able to enter the park as early as 7:50 using the tapstiles on the far left, walk up Main Street, head to the cast member with the "breakfast reservations here' sign, follow the CM's directions & have MB scanned and then check into BOG as early as 8:05, even for a 8:45am ADR. Again, this is all based on things staying the same as they were in May.