Back on topic for a bit... My wife and kids and I were in the family room on the SL arriving in LAX on 5/20. Our SCA (Yvonne) told us upon boarding that we were welcome to stay in the room until 6:30. I woke up about 2:00am since I've been sick and my sleep schedule was all whacked out, and just read while waiting to arrive.
We arrived at LAX at about 4:40, and I remember hearing an announcement from the conductor at that time. However, I don't know if it would have been in our room because the speaker in our room was turned off. The speaker in the hall would not have been remotely loud enough to wake me up, but I tend to sleep like the dead. For the next hour or so, I only heard vague rustling, never anything super loud. I can say that neither the conductor announcement nor any other noise was enough to wake up my wife or kids.
At 6:00 I woke up my family to start gathering our things to go. At 6:15 there was an announcement that sleeper passengers would need to be off the train by 6:30, and that the train was going to the yard shortly thereafter and it would be a long unreimbursed taxi ride back to LAX if you didn't get off on time. At about 6:25, we got off, and from what I could see, we may have been the last ones off of that car.
My experience may be atypical, but i would have had no problem sleeping until 6:30 had I not already been awake for other reasons. It reinforced everything I hoped about the new schedule. It was better than my last two trips. My most recent trip to LAX was overnight in coach, where we arrived about 5:00 and did get booted pretty quick. The one before that was sleeper, but on the old schedule, so I was getting up at 5:00 to get the "free" breakfast that I paid for before they shut the dining car down. So, with the new schedule, I'm getting dinner instead of breakfast, and I'm still able to sleep in longer than I would have under the old schedule.