Double / Triple Points plus Silver/Gold bonuses - how do they stack?
Theoretical SFO to LAX base fare of $100 dollars.
That would normally be 500 red, 625 silver, or 1000 gold.
But how does it work with bonus points promo?
Same flight would be under double points...
1000 red. And 1500 gold or 2000 gold?
Does the 25% or 100% stack once or twice?