I think your problem is the missing ‘option’ parameter like this:
<p><?php the_field(‘fest_date’, ‘option’); ?></p>
From the docs:
Template Usage
All the API functions can be used with the “Options Page’s” fields. However, a second parameter is required to target the options page. This is similar to passing through a post_id to target a specific post object.
http://www.advancedcustomfields.com/resources/how-to/how-to-get-values-from-an-options-page/
