The bit about multiple promotions seems clear as mud to me. I imagine AC spend counts as "outside the US" but .... who knows? I also wonder how things work if you hit the 150000 cap with some AC spend (so +7/$) and then keep spending, do you lose the additional 2/$ ? That would incentivize people to delay their AC spend (and restaurant and grocery spend) until after they've hit the cap for the promo which seems .... not in AC's interest....