Hi,
1. Once you create the order, you'll receive half of the information of the credit card in your order admin notification email, and half in the order history in the backend.
That way, you can then use your payment terminal of your brick and mortar shop to process the transaction and change the status of the order and delete the credit card data.
If you want an automated credit card form, then you need to use a payment gateway like PayPal Pro or authorize.net in AIM mode. It will display the same on the checkout but the transaction will be processed automatically at the end of the checkout.
2. The checking system doesn't check with any bank the information you enter. It just makes sure that the credit card number is a possible credit card number and that the date is a valid date. The check to make sure that the credit card information exist will be done by your payment terminal or your payment gateway by contacting the bank of the credit card holder automatically before processing the transaction.