Sometimes my job is slack as hell, sometimes it's busy as fuck. I work for an IT company that gets contracted out to various companies, and I sit on site with the client, which happens to be government for this project.
It all depends on what part of IT you want to go into, server management, applications development, network support (Cisco and shit), etc. I'm doing desktop support, my main goal is to get into server support at some point, but I'm kind of waiting to see if they unionize that role to make my move.
If you start out on a Helpdesk doing support on the phone, you might burn out quickly. I fortunately skipped that part of my career progression and couldn't be happier about it
If doing desktop support which is a likely starting point, you'll probably deal with a lot of stupid shit on a daily basis, ie people's PC's not booting up, you go down, plug in the power and boom, it turns on. Shit like that happens a lot
Of course, your mileage may vary.