Looking for clarity on this issue
I was considering using my SkyMiles for a Hyatt booking and saving my BWB FFNs for another time. Is there any disadvantage [that will affect said stay] to doing this? My understanding is that either way I can't earn base or Gx points, but both scenarios allow diamond amenity points and and access to club lounge for diamonds. Is this correct? Additionally, might I get a better upgrade using the FFN's? I'm pretty sure I can't use one of my four upgrades in either scenario... FWIW, hotel in question is Grand Hyatt San Antonio.
Thanks!