You can issue an order report which will provide you with your customer's contact details (name, surname, email, phone) for a specific event.
Go to the "reports" tab and select "orders" (it will be pre-selected).
In the "event" column select the event(s) which you want to issue a report for. If you want a report for a specific date select that from the date list.
You can also select more than one options on each filter by keeping the Ctrl key pressed while making the selection.
If you want to see the total number of orders for an event, in the "Order creation date from" field set the date sales started (or earlier).
Once you've made the selections, click on "show" and "export to Excel".
After the report appears, you can then filter it further (eg. by transaction value).