I've been a card holder for 5+ years. They have consistenly raised my credit limit (now at 6k), and are always sending coupons to be used at Macy's. You can usually always get an extra 10-15% off everything just by using the card. I pay the card in full each month (except for a few times over the years) and they have rewarded me consistently with CLIs. You can pay your bill in-store, online or by mail.
Pro Tip: Open the card when you are making a furniture purchase. This will get you the biggest bonus bang for your buck!