This is a total newbie question- if I have a Hyatt CC and I get the annual free night cat 1-4 and the extra free night at any Category 1-4 Hyatt hotel or resort if you spend $15,000 in a calendar year - and I want to stay at a higher level (looking at an AI in Mexico) - can I pay for the difference in a cat 4 and the higher level with either points or dollars?