I'm trying to remember when we went. I know it wasn't at opening, but pretty sure it was before noon. We were planning on taking the bridge to DTD so wanted to park on Pixar side. In the before times, we always went in the Pixar entrance so decided to try that.
When I showed my handicap placard, they tried to send us back over to Chip & Dale. We didn't want to park there, so proceeded up to the roof & when we asked to go further forward to get closer to the elevator, they tried to send us to the M&F elevators. They seemed confused when we said we wanted to take the bridge. It all worked out, but was definitely a bit confusing.
Another time, we went in M&F and when we tried to get to the Pixar side, it had signs saying VIP only.