Hey @theroad,
All of the meta isn’t saved at the point of that action, unfortunately—but you might have some better success by using the action tribe_events_update_meta instead.
add_action( 'tribe_events_update_meta', 'example_callback', 10, 2 );
Using this format, you get two arguments in that example_callback callback function, so you can do stuff like this:
function example_callback( $event_id, $data ) {
// Stuff with event_id and data....
}
We cannot help with custom coding, so you’ll have to investigate this and play around with things a bit, but if you head into that src/Tribe/API.php class file within The Events Calendar, around line 182 you will see the tribe_events_update_meta action I am describing here.
Check it out—best of luck with your tinkering!
George