I do not see you using the second argument anywhere. Assuming that event_details is a field of $post, you should pass the post ID at least to have_rows(). In case this is not it, we should find out where exactly the problem occurs:
- Have you checked if
$post is being populated as intended?
- Have you checked if the ID property of
$post is “ID” and not “id” or “post_id”?
- Have you factored in that when you call
get_the_ID() you are asking for the ID of the current main loop item, for which you have called the template?
