Add featured image from venue onto the event page.

my_add_featured_image_to_event_venue.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

add_action('AHEE_event_details_before_venue_details', 'my_add_featured_image_to_event_venue');
function my_add_featured_image_to_event_venue( $post ) {
    $venue_id = espresso_venue_id();
    if ( has_post_thumbnail( $venue_id )) :
    if ( $img_ID = get_post_thumbnail_id( $venue_id )) :
        if ( $featured_img = wp_get_attachment_image_src( $img_ID, 'large' )) :
            $caption = esc_attr( get_post( get_post( $img_ID ))->post_excerpt );
            ?>
    <div id="ee-event-img-dv-<?php echo $venue_id; ?>" class="ee-event-img-dv">
        <img class="ee-event-img" src="<?php echo $featured_img[0]; ?>" width="<?php echo $featured_img[1]; ?>" height="<?php echo $featured_img[2]; ?>" alt="<?php echo $caption; ?>"/>
    </div>
    <?php
            endif;
        endif;
    endif;
}