Congrats on accepting the offer! The operational details of the group won't be shared with you here but I imagine you can take a good stab at what sort of thing they are looking at. It is hard to describe the culture of a place - you have to work there to experience it and be immersed.
As a non production department the hours will be standard - please ask your recruitment consultant about this and they should tell you but this sort of operational detail won't be likely to be discussed here.
I work not far away from where that team is based so hope to see you around the building in the near future. Best of luck with the move - there is lots of detail on the site here about that process and you should spend some time scouring these pages to find interesting facts.
If something you find sounds weird, it may just be that things are weird here! Or it may be that the information is out of date. If in doubt ask a question to get confirmation.