Don't trust the words of any Managers and Team leader, directly discussed with the HR and take the confirmation for the every words on mail. Clear everything about leaves, holidays allowances if you are working, Shift-timing.
Also Make sure the client location and if there are any other rules for the shift and any other thing clear that. You should raise the concern if you have any issue, HR not taking care after the induction and take approval for every allowances as early possible.
The quoted salary is something you will not get.
The parks and benefits in actual are completely different from the offer letter.
Every single step is manual. People never talk about change or automation.