Could first-class, long-haul flights and airport lounges be next at Southwest Airlines? After all the changes to the airline’s long-standing business model in recent months, including bag fees, assigned seats and big loyalty program shake-ups, the company’s top executives seemingly aren’t ruling anything out. Pro tips: Major mistakes people make with travel rewards credit cards…

The Citi® / AAdvantage® Executive World Elite Mastercard® (see rates and fees) is a valuable travel card that’s a great fit for frequent American Airlines flyers. It carries a high $595 annual fee, but there are several easy ways to get excellent value from both the card and the AAdvantage program. And currently, the card…