You can include your own brand's favicon for your event landing pages by using an event landing page design template.

How to Include Your Own Favicon

Select the Designs option on the left-side navigation menu.
Select the Event landing pages option.
Select an existing design template or click the + Create design button.
1. If creating a new design, input a title for your design at the top of the page.
Within the General tab, scroll down to the Favicon section.
Click the default AddEvent logo image.
In the following window, select the New + button on the top-right to upload your image.
Click the Image option to go ahead and upload your image from your computer, or click the Folder option to create a new folder for your images.
After following the prompts to upload your favicon image, select the image and click the Insert button.
Customize any other design settings you would like and click the Create/Save Design button.
Lastly, you can follow the steps shared here to apply the design template to your event: Apply an Event Landing Page Design Template to an Event