They come out at 10:30. Unless something has changed in the last week or so, I hear they will be leaving soon to make room for the Inside Out characters. If you get in line by 9:45ish, you should be good to meet them before their first break. We went a couple of weeks ago, and DH was in line at 10. They took a break when he still had two people ahead of him, and unfortunately there was a technical problem with Baymax and the break was super long. Hiro even came out and started signing autographs for the people in line (he doesn't normally sign!). Baymax finally did make it out again though!