Lock pre order date on checkout

Hi,

It’s been brought to my attention that when the customer is on our checkout page they can adjust the pre order date. I have tested it and it can be changed to whatever date the customer desires.

This isn’t very good as the customer will receive a notification saying their order is being shipped etc when in fact its not.

Is there a way of locking this field so the customer cannot change/edit it?

Thanks,
Matt