Hi Ozbargain,
Thank you to those that actually gave genuine advice - appreciate it.
I don't have the time to manage this thread anymore so I won't be reading/responding.
P.s Forgot to mention the 12% interest car loan on the lamborghini, will be able to save in no time once I sell it.
Problem solved.
@WhyAmICommenting: I understand the fear of temptation, but it's a very small behavioural change. Moving purchases with the debit card to the credit card.
Especially given they have a clearly defined savings goal, I would find it harder to believe they could fall into the 'fake money/high disposable income' trap. But even still, I do agree with your suggestion of a low credit limit just to see how it works for them.
If they wanted, I've heard of people setting up a savings account for Credit card purchases. This way you see the money leave your main account so you don't treat it as 'fake money', you earn interest before you pay off the card and you earn points.