Part time work during first year (undergraduate)

I was going to say no, but then realised that I easily piss away 14 hours per week doing non-constructive activities.

If you avoid those non-constructive activities and do work instead, then I suspect yes.

But these "non-constructive" activities are good in some way cause you relax from work isn't it? I have to figure it out as I might have to work part-time to get finance sorted

Btw if you remove 14 hours from your week for work how much free time you are left with?

I deliberately excluded time I spend socialising with people, and that easily takes up a good proportion of my week.

I should probably set aside 3 hours each day to go through lecture notes, do any set work etc. I don't, though. If I manage an hour a day I'm doing well, and the other 2 hours a day are frittered away on the internet. And that still leaves me with plenty of unaccounted-for time in the evenings, which often is for socialising or watching University Challenge/The Apprentice.

I do chemistry, however. And at this rate will fail my January exam.
My engineering friends seem to have a similar timetable: A couple of lectures in the mornings, maybe a tutorial/workshop/lab 2 or 3 evenings a week. The rest of the time is yours.

From my experience of Computing, no. It depends on your degree.

Mechanical Engineering has a 1/3 dropout rate too, so you probably don't want too much extra on top of your work to be stressing you out. Can't you work in the holidays?