I will definitely retake, even if I'm worried about failing quant again.
Here is my Gmat focus experience.
First of all, I noticed a higher variance in quant scores (I took all the 6 mock tests), less in DI, while my VR scores were quite stable.
The exam reflected my expectations for verbal, it wasn't easy, complex text, a lot of CR questions, and at least two long text. DI was quite similar to mock tests too, I've got some heavy two-part analysis. I don't know why I panicked during quant...I expected questions similar to mock tests and the official questions banks (over 900 official questions), but I've got some really time consuming questions, I did 7 mistakes (about 3.10 spent per wrong questions, and in most of the cases I just guessed then because I knew that I was spending to much time, I could't review at the end because I didn't have time), so my pace was actually good for the right questions.
I wouldn't suggest to bookmark many questions.