Yes. When we went in Dec there were people being turned away because the resturaunt was book for the night,,,, Alfredo's, H&V and Liberty Tree were 3 of the ones we ate at and heard the CM's telling people it was full. However, if you do have later seatings than you want you have a good chance of showing up earlier and getting in earlier. We showed up amost an hour and a half early to one of our Chef Mickey ADR's and were seated within 15 minutes.
BTW,,, the manager at Alfredo's said they are the single busiest Italian Resturaunt in the world, serving an average of 2500 people per day.