Slowjet....more realistic advice is commanders, exercise that command authority and divert to your alternate if the conditions are unsafe...the only way any carrier will learn to adjust their schedules accordingly, is when it becomes expensive to carry on as usual...our commercial department at a previous employer used to schedule our arrivals there early morning during winter..fog...and afternoon hours during summer...thunderstorms...seems most other airlines did the same, as we always saw all the "usual suspects" either holding at GURAS, or diverting elsewhere when the weather didn't co-operate....