1. I'm 20 and worked there since I was about 18 and have been paid £5.30 the whole time - was told my pay would go up after the probationary period, but when I asked about it was told that it was at the manager discretion, so it didn't.
2. The only benefits I get are I think, a 15% in-store discount, but I can only use that for buying things for myself and not anyone else. Management can be a bit varied - sometimes they're lovely, other times they can be a bit of a pain to work with.
3. Generally speaking they are, yeah - if you need a day off or whatever, try to let them know as soon as possible.
4. Out of about at least 20 staff, only 4 are full time workers - it's highly unlikely you'll get a full time job there.
5. No you don't, but it's useful obviously for when you're serving customers to get a basic knowledge of the items you stock in-store.
6. Not really, it does seem to have changed a bit from what recent people have said from when I went for it - I was dressed fairly neatly in clean/unripped jeans and a hoody and was basically ran through health and safety, what hours I could work, what I knew about the store, why I want to work there etc - none of this role-play stuff.