Add Repeating Custom Field to Custom Post Type with Content Filter

function park_content_filter( $content ) {	
	$new_content = '<div class="camp-wrap clearfix">';
	$new_content .= '<div class="item-title">Camp</div>';
	$new_content .= '<div class="item-value">Description</div>';
	if(function_exists('get_field') && get_field('camp')){// camp is the field group
		while(has_sub_field('camp')){
			$new_content .= '<div class="item-title">' . get_sub_field('camp_name') . '</div>';
			$new_content .= '<div class="item-value">' . get_sub_field('camp_description') . '</div>';
		}
	}
	$new_content .= '</div><!--camp-wrap-->';
	$content = $content . $new_content;
	return $content;
}
function add_park_filter(){
	if(is_singular( 'park' ))// park is the custom post type
		add_filter('the_content', 'park_content_filter', 1);
}
add_action('template_redirect', 'add_park_filter');

function park_content_filter( $content ) {

$new_content = '<div class="camp-wrap clearfix">';

$new_content .= '<div class="item-title">Camp</div>';

$new_content .= '<div class="item-value">Description</div>';

if(function_exists('get_field') && get_field('camp')){// camp is the field group

while(has_sub_field('camp')){

$new_content .= '<div class="item-title">' . get_sub_field('camp_name') . '</div>';

$new_content .= '<div class="item-value">' . get_sub_field('camp_description') . '</div>';

}

$new_content .= '</div>';

$content = $content . $new_content;

return $content;

}

function add_park_filter(){

if(is_singular( 'park' ))// park is the custom post type

add_filter('the_content', 'park_content_filter', 1);

}

add_action('template_redirect', 'add_park_filter');