I feel your disappointment about this. While the need of a schedule as you pointed out is valid, an accurate scheduling is next to impossible due to the nature of tournaments where delay always exist. What is needed is approximate schedule so that participants at least has a little bit of idea when is their turn to play.

But yeah...who said FIFA starts at 5.30? The tournament always starts right after the launch ceremony. Do you mean your turn to play? Well...that's pretty normal for a game with 128 players around.