I received a request for 2 guests along with an  inquiry and the Pre-approve/Decline options.
 
In the potential guest's inquiry he asked if guests are allowed. I responded and asked for a little more information as to who will come with him and who will be his guests and explained that my property is more family oriented and that I do not allow parties. 
 
It has been hours and the potential guest has not responded. I have read that I need to pre-approve or decline within 24 hours to maintain a positive response rate; however, as mentioned, I responded to his inquiry. Must I still pre-approve or decline with the 24 hour timeframe?
 
Thank you in advance for any advice.