How to create a automatic Field value number to display in the lable for an custom content type: Itinerary e.g Day 1, Day 2
Using computed field you could do this.


Install computed_field module
add a field into the content type you want to count the field for, and then in the display code box add this (field_slect is the field you want to count)

$display_output = sizeof(field_get_items($entity_type, $entity, 'field_select'));