I wish man. I got 4 weeks at my first job thinking that I would be able to use it all and there was no way. I used 2 weeks my first year and felt like I took too much. I guess it depends on your job but I get calls at 2 AM some nights and people in the field don't give a shit if you are on a ski trip somewhere.
I hated work at first, it is hard to adjust to going to school 3 days a week and waking up at noon. It took a while to get into a productive routine so don't worry if that first month or so you freak out.
Overall I would have to say that I like work a lot better now. School stressed me out with intense bits of work and being constantly tested and judged wears on you especially after most of us will be in school for something like 16 years. Not having BS busy work homework and having nights to yourself is a good bonus. The best part about working is having money, the worst part about working is that your money goes away very quickly. Car payments, student loans, rent, power, gas, cable, car insurance... the list is fucking endless and seams to suck up every penny it can. I consider myself extremely lucky to have the job I have, I don't know how people get by on 30 grand a year.
More advise, dress well. I try to dress really sharp every day. Don't wear jeans on Friday, the boss doesn't wear jeans. I have found the better you dress and present yourself the easier it is to bull shit your way through things, which is 99 percent of work. In my experience I didn't learn shit in school. I learned broad generalized concepts, all college is for is to prove that you can learn and succeed. That's why harder majors get paid more, you have proven you you can learn. Staying in shape is also a good idea, it gets a lot harder when you only have 4 hours of free time a day and you have to spend 1/4 of it running in place.
I also realized after school that all the stupid judgmental stereotypes fall away. No one gives a fuck if you are nerdy, people use to give me shit all the time in school for playing with RC helicopters. Do shit that makes you happy with YOUR free time. Meet people at work they are probably more interesting than you think, but most of the time they are boring as shit. After school I was kind of lost, I had no real hobbies beside skiing. So I looked around and found there was a lot of shit to do. I started brewing beer and I am working on my pilots license, which is expensive as shit but I always wanted to do it. I made a list of stuff I wanted to do by 30 and that was on it.
Don't tell people you are a good skier, its more fun to just go skiing with them and ski switch a little bit and blow their fucking tits off. People around work still think I am a pro skier because I did a switch 3 on a roller with some work buddies. Then you can just play it cool. Always look for ways to boost your ego. I am a pretty confident guy but I am constantly struggling with self doubt so I take any victory I can, but dont be a prick, this is a fine line but usually its better to be a little on the prick side than a pussy who lets people walk all over him.
And my last little bit of advise before I go, help people move, if you have a truck help them move. Helping a person move is like the ultimate "You owe me bro".