The promised economic boon from the World Cup hasn’t matched expectations, at least not yet, for U.S. hotels. Room bookings have been lighter than expected in most of the 11 U.S. cities hosting the world’s most watched sporting event, according to an April survey by the American Hotel & Lodging Association. In several cities, including Kansas City , Boston, Philadelphia, San Francisco and Seattle, a majority of hotel operators said bookings were actually running behind typical seasonal demand. In others, including New York City, Los Angeles, Dallas and Houston, demand was flat so far compared with a regular spring and summer, according to the association. The hotel association blamed travel concerns from international fans, worries about wait times for a U.S. visa and the cost of attending the tournament — including high ticket prices and transit costs in some cities— as major factors in the softer-than-expected demand.…