During special sign - up promotions, you can can get an additional 50,000 miles with the Black Card after charging $ 12,000 in the first six months. (rewardexpert.com)
Special signs in the environment give hints for special items, so players can always look for clues as they move through the environments. (geardiary.com)
However, it's a good idea to hold off signing - up for other programs until special sign - up bonuses are offered. (uponarriving.com)