Macau (also spelled Macao) is one of two special administrative regions of China. Hong Kong being the other one. What this means is that Macau has it's own currency (the pataca), immigration policy, customs procedures and legal system.
When we decided to embark on this last minute little of adventure of ours, we neglected to look into accommodation prices before booking the basically free Aeroplan tickets. It turns out that hotel prices in Hong Kong are insane.