In reply to Taurig: Simple answer yes. I have had 2 friends on the Aldi scheme. One lasted 6 months (call her Friend A) of the year they wanted, and I promise you she wasn't shy of long hours or hard work (She is now at RBS). The other lasted the year and got out as they had wanted (Friend B).
Aldi is extremely well paid for any first year grad job, 40k + audi A4, you have to expect that they will want a lot from you.
For friend A the killer was 2 weeks without a day off doing something like 16 hour days to cover another a drop out or something similar (can find out exactly if you wish). She did sacrifice her social life due to the long and irregular hours (friends all had weekends off when she was probably working)but she accepted that.
Both said that you will be easily criticized for a minor mishap etc but never/rarely praised even if the task was done to a fantastic level. Neither A or B struck me as people who need praise but if you only here negatives then it could possibly get you down - but do check if you sometimes need a pat on the back.
Both walked into second jobs due to the known toughness of the scheme (obviously they provided good reasons for their departure to the new boss). It goes give lots of responsibility and demands a lot.
Neither to my knowledge spent any time living in hotels, will check though, but both spent a lot of time away from home on the road to various stores.
Friend A doesn't quite regret it but would never do it again or recommend it unless you really don't care about anything except the pay cheque.
Friend B appreciates how far it took them but has warned me against it saying that do it for 6 months while applying elsewhere unless you are desperate to earn 60k a year but suffer from a lack of life.
If you want any more information please ask and I'll even offer what I have been told or go ask either of my friends.
Final point, even though I'm being told think hard and avoid it, due to the options out there I have just about finished filling in the form, whether I press send depends on my next 2 interviews.