Originally Posted by
dtsm
We have the most success with last minute bookings, which I realize doesn't help OP out. As far as we can gather, Eva doesn't seem to have a hard fast rule as far as we can tell.
My experience as well. EVA will try to sell the seats as long as possible before releasing additional reward seats. For RL, the J and D inventories will give indication whether EVA will release more seats closer to departure. Last minute availability usually best at T-72hours when they released EVA Diamond guaranteed seats.