Originally Posted by Weatherboy
But anyhow, the "unlimited" upgrades are only as unlimited as there are available seats. If there's other Platinums in-line for upgrades, they will always get them before companions, regardless of how legitimate those companions are.
This is not true! There're all kinds of permutations, but a platinum companion who checks in two hours before a flight will still be higher on the list than a real platinum who buys a ticket 90 minutes before. And in ANY circumstance, a platinum upgrade trumps all legitimate golds and silvers on the list...