Renting convertible?

[twoblacklines]

Looking at going on holiday around june/july next year to Sorrento in Italy for a week.

I am looking at hiring a convertible from Naples, prices are around £300 a day for 7 days so £2100 for an a5 convertible or equivalent which is great.

But it says min age 25 (i am 28) and min credit cards 2.

This is a problem for me as I am dead against credit so I dont have any credit cards, only a debit card and a business debit card.

How can I get around this problem, other than getting a pair of credit cards that I will never use other than the hire?

Thanks