ABD can and does make changes in the order/plans even after booking opens. The order in which we visited cities in China changed only several months before our departure, and several of the smaller things listed in the itinerary were just cut out with no mention. This can feel off-putting if you like to know your schedule and plan, but post trip I really didn't end up caring to much that those things were skipped. It wasn't anything major. I think the best way to go into the ABD China trip is with the knowledge that the big stuff (Great Wall, Pandas, Terracotta warriors etc) will be hit unless there is a major disruption, but what type of restaurant you eat at, or what type of guide you get at a specific site, might change. The 2025 itinerary gets rid of the 2 flights in 1 day, which in my opinion is a good thing. That day is just a lot, and wears you out for the rest of the trip.