NEW YORK (Standard&Poor's) March 9, 2012--Standard&Poor's Ratings Services said today that its rating on Bethesda, Md.-based Marriott International Inc.'s 3% series K senior notes due 2019 remains unchanged at 'BBB', following the company's $200 million add-on to the offering. The aggregate amount of the notes issue is now $600 million. Marriott intends to use the proceeds for general corporate purposes. The corporate credit rating on Marriott is 'BBB' and the rating outlook is stable. The rating partially reflects our assessment of the company's business risk profile as "strong" (as our criteria define the term). This is based on the company's sizable, good-quality system of hotels targeting multiple price points; its experienced management team; its focus on