Do you want to stop online bookings for just a one-off period? Here's how to do it: 

1) Create a Periodic Close out

Go to Settings - Close Outs - Add New Period 

Name - add the close out's name for your reference 

Internal Description - only you and your staff can see this 

Message to Customers - this doesn't display as of yet, so you can ignore this 

Mode - Periodic 

Type - Common  

Colour - pick your favourite 

Add Time Interval - make sure this covers from your opening to closing times

Area - All 

Click Add and you're done 

2) Exception Date

Go to Settings - Online Settings (Under Diary Configuration) - Other Details - Booking 

Under Online Settings, you'll find the Except Dates section  

Add in your dates

Click Create Exception

Remember to Save at the bottom of the page!

You can also remove exceptions by pressing the x next to the date