The ARN 2012 Revenue Conference & Exhibition in Orlando, Fla., welcomes a wide variety of exhibitors and speakers, and culminates in the annual awards banquet. American concessionaires are successfully bringing concepts from overseas to U.S. airports. Travelers are always looking for new amenities, and common-use lounges are gaining in popularity. Airports aim to give their concessionaires a boost by guiding traffic to them. HMSHost Corp. and Starbucks mark 20 years of their partnership. Daniel Franklin, editor of “Economist,” explains why he thinks the world’s economy isn’t on solid ground.