MotoPress Hotel Booking Custom text on checkout

$GLOBALS['themo_extra_adult_text'] = true;
$GLOBALS['themo_extra_child_text'] = true;
$GLOBALS['themo_extra_pet_text'] = true;
$GLOBALS['themo_extra_cleaning_text'] = true;

function themo_mphb_translate_service_callback( $service ) {
	
    // Maybe modify $example in some way.
    if(isset($service) && $service->getTitle() == 'Extra Adult' &&  $GLOBALS['themo_extra_adult_text'] ) {
		echo '<li class="themo_rate_notice">Rate set per night based on double occupancy (2 guests). Check-in any additional adults here. 5 guests total is the maximum. </li>';
		$GLOBALS['themo_extra_adult_text'] = false;
	}
	if(isset($service) && $service->getTitle() == 'Extra Child' &&  $GLOBALS['themo_extra_child_text'] ) {
		echo '<li class="themo_rate_notice">Rate set per night based on double occupancy (2 guests). Check-in any additional children (under 12) here. 5 guests total is the maximum. </li>';
		$GLOBALS['themo_extra_child_text'] = false;
	}
	if(isset($service) && $service->getTitle() == 'Pet Fee' &&  $GLOBALS['themo_extra_pet_text'] ) {
		echo '<li class="themo_rate_notice">Pet Fee is $20 per night. We do not charge more then 3 nights or $60 each pet.</li>';
		$GLOBALS['themo_extra_pet_text'] = false;
	}
	if(isset($service) && $service->getTitle() == 'Extra housekeeping (For five nights or longer)' &&  $GLOBALS['themo_extra_cleaning_text'] ) {
		echo '<li class="themo_rate_notice">A $50 charge will apply to all bookings of 5 or more.</li>';
		$GLOBALS['themo_extra_cleaning_text'] = false;
	}
    return $service;
}
add_filter( '_mphb_translate_service', 'themo_mphb_translate_service_callback' );