Well, they didn't last year. The first cuts, on the Builder, happened just a couple weeks before the second sleeper was scheduled to come on.
Hopefully, they learned something after last summer's debacle where the Builder's second sleeper never appeared, the SW Chief's got pulled mid-summer at the height of the season and the CZ's got pulled in early Fall. That certainly looks like they planned well for peak travel season, doesn't it?
Their track record is not good. This late winter and spring, the CZ had its second sleeper, with sold inventory, pulled yet again, albeit with more notice than last summer's clown show.
I regard this summer as a beta test that at least some competence has been restored to equipment planning and that those who manage equipment and those who manage inventory have resumed speaking to each other.
Personally, I don't participate in betas.
I will not book in non-base sleepers until Amtrak has managed to go a full year, including peak seasons, without pulling this nonsense. By my reckoning that'll be early spring 2024. At that point, I'll consider the beta test of their ability to tie their own shoes successfully completed. Not before.