A new study evaluates traveler happiness based on where the highest and lowest hotel reviews came from. RewardExpert ranked the top states for happiest travelers based on a data set of nearly 900,000 user reviews. The reviews came from a total of 4,333 hotels that included both the reviewer’s location and numerical rating, with metrics such as percentages of negative and positive hotel reviews by state. North Carolina as the 22nd happiest on the list with an average hotel rating of 4.05 out…