There is a line to the right side of the entrance that you will "check-in" at.(they make sure you are on the ADR list) Once you are cleared to go in, walk to the back to Tusker House and check-in @ the podium. We had a 9:05am ADR as well, but got there pretty early (around 8:30am) checked in and were seated almost right away. You take a picture with Donald outside the building before you are seated! (FYI - if you are staying at a Disney resort, you can catch a character breakfast bus at the resort starting around 7am.)
Just a tip - the breakfast took about an hour (eatting and seeing each character). When you are done, the safari entrance is right outside Tusker House. We had about a 15-20 minute wait at that time (but we did go on an extra magic day which are typically more crowded and Disney in general was more crowded with the free dining promotion that had been offered) but it seemed to go by much quicker. You can either hit the safari after you eat, or at 9am when the park opens, send someone out to get a fast pass for everyone.
We really enjoyed this breakfast. Have a great time!