What will your bonuses be, and for what spend? (Marriott not looking so good on this end)
FWIW there should be no mysteries. The typical procedure is to make a screenshot of the screen with the button you click on to launch the application (which will have the details of the bonus), then another screenshot of what comes up after you've completed the application. Another thing that eliminates is the "They do not have any app for the..."
Also is it possible there's a bit too much aggressiveness in getting bonuses (DH Arrival, for example) at the expense of degrading average-age-of-account?