Single event page attendee list WooTickets 1.0 (TEC 2.0.11)

// Build a list of attendees
$attendeeList = TribeEventsTickets::get_event_attendees(get_the_ID());
$customerList = array();

// Build a list of customers (by order ID)
if (is_array($attendeeList)) {
    foreach ($attendeeList as $attendeeData)
        // To dovetail with WooTickets default mode of operation we're only going to concern
        // ourselves with completed orders, but this clause could be changed
        if ($attendeeData['order_status'] === 'completed') {
            // Record the order ID and number of attendees per order
            if (!isset($customerList[$attendeeData['order_id']])) {
                $customerList[$attendeeData['order_id']] = 1;
            }
            else {
                $customerList[$attendeeData['order_id']]++;
            }
        }
}

// Iterate through and print the customer's deets in an unordered list
if (count($customerList) > 0) {
    echo '<ul>';

    foreach ($customerList as $orderID => $totalAttendees) {
        $order = new WC_Order($orderID);
        $gravatar = '<img src="http://www.gravatar.com/avatar/'.md5(strtolower(trim($order->billing_email))).'">';
        $attendees = "$totalAttendees person(s)";
        echo "<li> $gravatar {$order->billing_first_name} {$order->billing_last_name} &ndash; $attendees</li>";
    }

    echo '</ul>';
}

// Is no one attending?
else {
    echo '<p>No one is attending. Come on, sign up!';
}