@Deanna139 Yes, you'll get pesky messages from Airbnb prodding you to either pre-approve or decline an Inquiry, but you can safely ignore those as long as you have responded to the inquirer within 24 hours. The inquiry will expire and you can clear the pesky messages from your dashboard.
Of course,if it's a booking request as opposed to an inquiry, you do have to either accept or decline (or find a way to get the guest to withdraw their request if it's inappropriate to your listing) within 24 hours.