For our upcoming stay at Park Hyatt Saigon we have "BOOKER UPCF, BOOKER HONY, BOOKER MEMB". HONY is definitely Honeymoon, so it's great to see that they acknowledge that (our travel agent told them). I think "UPCF" is confirmed upgrade, which we have through a Hyatt Prive rate. The higher room category already shows on the website. "MEMB" must just mean normal member, no status.