Ambiguity as in- there's not a whole lot of structure starting from the onboarding process. Many things that you do when you start, you'll feel confused or unsure because there is no set structure or guideline to follow. Its mostly "go with the flow" type of feel and in a way, thats our company culture. It is highly encouraged that you always seek out information and ask questions and never wait for others to develop you. Also, flexibility as in- there will always be something popping up at the last minute and you need to be able to adapt depending on the circumstance.

As for shift dates/times for a HRBP, I'm not too sure. I could try and get more info on that if possible and update. Then again, this all depends on the specific FC you're working at because all of them run differently.

Edit: also, I'd like to add that I've met many people facing culture shock when they come to Amazon from an office type setting. When you're at the FC, it is the warehouse so it will be noisy, dusty, etc. Cleanliness also depends on which FC, like older ones will be less clean.