A "Daisy Chain" approach. Want to broadcast the wifi marketing to additional access points. With the proper settings you can plug additional access points into the Ethernet ports on the back of your wifi marketing access point or use a simple wifi switch to broadcast the wifi marketing landing page on your additional access points.
Note this is not the recommended setup: The wifi marketing devices do have mesh capabilities, and it is recommended you use additional wifi marketing access points, however in many cases using your existing guest wifi access points will work just fine.
Here is a link to an inexpensive switch that can work if you are connecting additional access points.
*Before implementing be sure the existing access points are only being used for guest wifi network and not running additional private networks.