An interview and a job within 4 hours!!

When I saw a job at my girls school advertised back in July I jumped at the chance and applied for it straight away. I always said that when my girls started full time 'big' school I would go back to work (relunctantly lol!). The job was only for a 'washer up' in the canteen, but it's a start. I applied in writing to the head of the kitchen and didn't think I would hear back as I thought interest would be really high! 3-4 weeks ago I got an application form through the post and I was delighted to have gotten at least that far! But still didn't hold out much hope of things going any further.
The beginning of last week I got a phone call asking if I could go for an interview! Woo Hoo another step closer!
So I set out early this morning to beat the traffic which my hubby said would be busy, ha the roads were soooo.... quiet we sailed (not literally!) straight into town onto an empty carpark! Mum and dad came so they could take the girls for a wander around town whilst I had my interview. I bought myself a paper and read that on a bench outside the church as I had so much time to kill! I got to my interview 15 minutes early and only waited a couple of minutes before being seen at 8.50am I came out at 9.35am.
I had a phonecall at 1.10pm asking if I was still interested, after saying yes, was told the job was mine!!
Just need to take some documentation in on Monday so they can do a police check, I had one when Hollie started nursery as you have to have one to help out in the class, so am sure it will be fine. Once that comes through I start straight away, well when school is open again!

The job is only an hour a day serving and washing up, but it's a foot in the door. I've now talked to a couple of people, one of which being the lady who did the interview and that's where they started and then moved up the ranks, she's now in charge of 36 schools, the other went onto kitchen manager and now is a teaching assistant!! Fingers crossed my hours will increase over time, someone might leave or change jobs and as I'm in the door I may get offered it!?
My mum can't understand why I would want to mess up every day for only an hour, but I said a job at the school is perfect for the school half terms and holidays. If I were to have gone for a job at the local Morrisons (same distance as the school) who would have the children during these times, she works, my dad isn't all that well, I don't want to rely on auties and certainly don't want to pay anyone?
I had never had an interview before as I walked straight into a job straight out of school and stayed there for 13 years until I left to have Lillie. When I went for extra work at the pub it was just like a chat!
I haven't worked for 6 1/2 years but am quite excited at the thought of doing something, however little it will help buy those little treats!