Because I'd rather play than sleep sleep I have emailed Coles and Woolies. Aldi didn't have a contact form.

Dear Coles/Woolworths,
If one is shopping with a toddler and one opens a packet of food and gives some to the toddler prior to paying is this ok?
Is giving a piece of fruit to the toddler and getting a similar piece of fruit weighed at checkout ok?
Thanks for your time.
Chloe.
If they reply I will post it here.