Hi John,
The provided link does not contain sample code. But the
below sample demo link will have a source tab which contains the sample code as
well as the JSON data.
https://ej2.syncfusion.com/react/demos/#/bootstrap5/maps/seat-booking
The complete source code of the application is available in
the below link.
https://github.com/syncfusion/ej2-react-samples
The icons and the JSON files of the Maps sample are
available in the below location.
https://github.com/syncfusion/ej2-react-samples/tree/master/src/maps/images
https://github.com/syncfusion/ej2-react-samples/tree/master/src/maps/map-data
Please let us know if you need further
assistance.