I could have spent zero on hotels but wanted a specific IHG hotel and did not quite have enough points to book it. Then I remembered that you can buy hotel points- it is a bit expensive but worth it when you are just short a few points. The number of points I needed cost me only fifteen dollars and this got me enough points to book the hotel I wanted for free.
By the way the holiday inn express in Florida City is a nice hotel to stop at if you are needing a stop on the way to the keys. Here is a link to the hotel.