Christmas jobs

I've been depressed and preoccupied a lot lately, which hasn't particularly put me in the mood for updating much.

I would like to ask you all your opinion on something though.

I am desperately looking for work as an architect (or in the worst an architectural assistant), and until I run out of money that will be my goal. I'm not ready to compromise yet.

But my relatives are constantly on my case (they are all underachievers so they don't really get where I'm coming from), and spending so much time at home with my grandmother is driving me up the wall (and her too I think). So I have started applying for christmas jobs at big shops (no way I'm working for a small shop). I would make an awful salesperson, but they don't need to know that. And anyway I'm only applying for part time and temp positions.

My big worry is this: Let's say I get a temp job in say Boots (have you ever tried applying there? Their questionnaire is crazy! I'm sure I failed it.) But then I get an interview from an architecture practice and they want me. What happens then? Can I quit from the temp job, or having signed some sort of contract, that will get me into trouble? I'm pretty sure they won't sit around waiting for me till after Christmas for the other job.

I'm so confused! A bit of extra money and getting my family off my case is so tempting. But not if I might potentially screw up on what I really want.

Help! What are your opinions?