Yes, credit cards can usually delay repayment for a few days. This time should be called grace period. I wonder which bank's credit card the landlord used? I mainly use CCB credit card, and there is a five-day grace period after the final repayment. The repayment within these five days is my normal repayment, and there will be no late payment fee. However, the grace period of each bank is different. For example, Bank of Communications for 3 days and China Merchants Bank for 2 days. The landlord had better ask the bank customer service. You don't need to apply for the grace period of CCB.