High Street giant Iceland and its Food Warehouse stores are to accept payments in old "round pound" coins until the end of this month rather than Sunday's official deadline.
"After October 15, the 12-sided £1 coin will be the only £1 coin being spent in the United Kingdom".
The firm's Daniel Cowen said: "With so much to think about and do, it is understandable many parents and kids have missed news about the pound coin switch-over".
That means people across Kent have an excuse to go out and spend their old coins, if they have any left.
"The old pound coin will soon be devalued more than Harold Wilson's 1967 'pound in your pocket" and part of the problem is that the pound coin often slips out of the pocket and between the vehicle seats'.
As many parking machines have not yet converted to the new 12-sided coin there is a good reason why many auto owners will have a still have a stash lying about.
A British Beer and Pub Association spokesman added: "We urge everyone to make sure they are prepared for the changeover on the day, and make sure all staff are fully aware".
However, some shops including Tesco, Poundland and Aldi, have said that they will still accept the old coin for a bit longer.