Events Booking allow you to export registrants of one or all events to Excel/CSV file. On Registrants Management screen, you can press Export Registrants button in the toolbar to export registrants from one selected event or from all events. Note that, before pressing Export Registration button, you can filter registrants data you want and only registrants meet the filter will be exported:
If you enable group registration in your system, there are two config options which you should care about (go to Events Booking -> Configuration, look at Export Registrants Settings tab, find and change it if needed):
For custom fields, if you want to hide any fields in the Registrants Export, go to Events Booking -> Custom Fields, click on that custom field to edit, set Hide On Export parameter to Yes.
For other fields, You can also choose to include/exclude fields you want. Go to Events Booking -> Configuration, look at Export Registrants Settings tab, and change settings to meet your need.