We just got back and had our BBB on 3/28 followed by lunch at CRT.
Anyway, our BBB appointment was at 9:40am and our lunch at CRT was at 12:00pm. We arrived at BBB @ 9:30am and had to wait until 10:03am for a chair (I have 2 girls, but they got them in at the same time). At 10:45, we were done and headed off to ride Winnie The Pooh using a Fastpass. So, I'm guessing we could have cut it closer (I did try for 10:00am BBB, but no openings when I booked at 170 days ... missed my cutoff, I know. The reservationist said 10:30am would be cutting it too close).