I have 2 of the 'better' free nights from my Hyatt credit card last year that I need to use up. I want to gift it to my brother visiting NYC in an upcoming weekend. I guess PHNY is the most expensive. However, the problem is that my brother and his wife might want to bring another couple on the trip. Would a 4-adult occupancy be possible at PHNY using my 2 free nights? What is the procedure in booking? For most IHG hotels in most places, I can put additional guest names and I don't even have to show up. Not sure if this is easy/possible for using Hyatt certs... If PHNY is not possible, what other Hyatt properties are good in Manhattan?