As a staff, you will sit for hours doing absolutely nothing. You can't ask for more work because you "could be busy soon". While I think I am worth what I am paid and then some, I don't feel like my work is worth it. I sit and do nothing, and then when I do have work they are trivial tasks and you don't feel like part of the team.
Many of the seniors and managers come in late in the morning and prefer to work until 11pm or later. If you are a morning person, there's no point coming in early because you won't have any work and you will still be expected to stay all night.
Work-life balance only exists for married individuals and Mom's. Do NOT expect to be allowed to ask for a weekend off, even if the manager is on vacation. Expect to always be in a busy season to "make you well rounded".