WOW I have so many questions and thoughts about this book but for the sake of brevity I will write down my main takeaways. 
Thank you S&S for the ARC!
First off, I did predict the main twist at the end (Roux getting offed on the hike) but it was still chilling when it happened. 
Secondly, there were some brilliant moments in this book. I loved the first eighty pages where Ivy's childhood and character was developed. The fact that Ivy got scurvy near the end?? Genius! I am really excited for Susie Yang's future work.
Third, I enjoyed Yang's examination on class and socioeconomic status, particularly in her comparisons of old wealth (the Speyers, Tom and Marybeth) and new wealth (the Lins, Roux).
Fourth, I really am having trouble deciding whether or not I liked these characters, as they all were very flawed. However, I really enjoyed making comparisons between them.
My one complaint with the book was that some parts in the middle were pretty slow plot-wise. Overall, my emotions are a bit all over the place with White Ivy and especially the ending! I'm excited to ruminate on this book more and discuss it with others.