1 - One of the things I like the most about the military is how life is much more structured and you always have a clear goal, and having important responsibilities
2 - working a 9-5 job 5 days a week, get pissed on the weekend, and repeat.
3 - a clear goal every day.
Seeing as you're wanting to join Infantry I may be able to help a little, but this will be a biased opinion.
1 - The military being structured and always having a clear goal? You'd think so, but it's far from it. As a little ol' digger you're not really told anything, nor will you have any 'big' responsibilities. You'll hear the expression 'hurry up and wait' being thrown around a lot, the military really likes to stuff you around, even in every day barracks life.
2 - try 7:30 - 4, 5 days a week, and trust me... you'll get on the piss.
3 - I hope you like sitting on your ass and talking smack. There's a lot of it, it's actually really boring at times.
Despite those points, and sounding a little negative... When you're actually doing your job it's really not that bad, and at times, can be quite enjoyable.