The competition this year is very different from last year. Beyond the 0830 start for the run, you don't know what time you are competing for the subsequent events. Starting order is based on athlete ranking. The higher you are in the ranking (closer to the top), the later you go. The lower you are in the ranking, the sooner you go. The rankings, and thus your positions in the heats, change after each event.
There are scheduled start times for each event, but even these will be a little fluid. You won't have the same luxury as last year of knowing you have approximately four hours to recover, refuel and reset before your next event. Be smart about taking rest when you can.
Be flexible and prepared for a variety of scenarios. Have food and water in various quantities ready for you. Keep alert and in touch as the events unfold. Make sure that you are warmed up and ready to go when your next event is on.