I have one that I bought in China. Despite using 1 free night voucher at the hotel where the package was purchased, I have doubt of its claimed use within Asia. Hong Kong Hilton never heard of it. I can't register the card on the website as there is 'no record'. I hope I can utilize the 50% off vouchers in Japan or China like it claims (at Hilton's other than where I bought and have used the 1 voucher).