I have seen many children, even around 4-5 I would say, I think taking your time it's possible, just watch them out very carefully if you mean to walk on the coastal path before returning to the car park as there aren't railings on the cliffs, but the walk down to the beach is feasible. Maybe for the youngest help yourself with one of those safety leash and you should be fine.

Definitely.. Time it right with low tide and there are dozens of rock pools and caves to explore.. We took our 8 and 5 year old there last week and they had a blast.. There were people there with even smaller children as well.. Warning.. it gets VERY busy..

Yes, it is signposted, it’s not easy though for anyone with a disability

The tide tables for the Cornish coast are published online, it obviously changes with the moon cycle, at the moment low tide is around 2pm. I’d go +/- 3hrs of low tide.

But make sure you take all your rubbish back with you, quite a few dont

The bus service from Helston to Lizard passes the Kynance Cove turning, but its a good 1/2 mile then on to the car park/visitor area, and a good walk down to the Cove from there. A taxi from Lizard would probably be best. The Cove itself is beautiful, and there is a National Trust café too.

Not between 7am and 7pm from Easter Day until October

Some areas may be week