Yes, there is a special gate near the DTD side that is marked for the breakfast group. Just get in that line, they'll confirm your reservation (in our case, they just asked if we had reservations and gave us our buttons) and then let us in with enough time to make our reservation. We went on a MM day when we didn't have MM access (and stopped by City Hall on the way in to get DD7's birthday button). It was good, but since it was a MM day, no cool 'empty park' pictures (I would have scheduled for a non-MM day, except, you know, her birthday fell on a MM day).