I have my first ever Hyatt stay coming up next week and need some help deciding if I should start racking up Hyatt GP points or transfer to AA miles... Here are some points: I have four nights (2 different properties) next week, and three nights (OWMD) in January I'm currently Diamond (challenge), but I'm not sure yet if I'll be Diamond during the OWMD (my challenge started prior than the OWMD one... unsure if they'll extend mine). I likely won't be able to make the required qualification to keep Diamond The 5000 points for 3 nights won't help me next week. I registered for the promo to get 1500 AA miles per stay If I receive GP points, I get 5 points per $ spent, plus 30% as a Diamond If I receive AA miles, it is normally 500 per stay, but the promo makes it 1500 per stay. So, for my two stays next week (corp rates, <$150/night), I can either get 3000 AAdv miles or approx 3500 GP points (or 5500 GP points with the 1000 point Diamond amenity if offered at a Sierra Suites). Unfortunately, I can't pay for my stays with my Hyatt Visa (company policy mandates corp amex), so no extra points that way. Since my current GP balance is 0, I don't have a lot of Hyatt stays planned, and I don't anticipate winning any of the Hyatt Facebook 100K GP points contests, I think it's probably better to just take the lesser AAdvantage miles, which I do use. Is my logic flawed?