Originally Posted by LAXGUY

If you plan to use a Hyatt credit card on a third party site, buyer beware.
I encountered a third party payment site in connection with a stay at a Hyatt in Greece last year. Although I charged the stay to my Hyatt credit card, I did not receive points for doing so because Hyatt's system (understandably) did not recognize the third party site as having anything to do with Hyatt.
After a lengthy (couple of months) back-and-forth with Hyatt, I eventually got the points but it was a hassle I didn't need.