Miles you can earn anytime, but Hong Kong is worth enjoying all the time. While I have spent plenty of time at The Wing (love the noodle bar), I highly recoomend taking the train into the city and treating yourself to some great dim sum, and catching the Star Ferry over to Kowloon and snacking on some egg custard tarts while strolling around. But before you do that, you might visit the Shanghai Tang store in Central. I find it always interesting and a great place to shop for someone at home or for yourself. You can go crazy trying to do too much such as the Victoria Tram ride, but I find just walking around to be the best way to spend a few hours.