求大家帮我翻译这句话，实在看不懂

定TUNE酒店最后一步有个条款


In our effort to enhance the security of credit cards used for payment, credit card Bookings made within 5 days prior to check in will require presentation of the said card. Failure to do so may delay your check in process. We thank you for your kind cooperation and understanding.


红色字体部分到底是什么意思？？请大家告诉我！


扣款一直是DECLINED，十分不解是为什么！！