Southwest Airlines will debut a new ad during the Super Bowl poking fun at its former open seating policy. The ad, "Boarding Royale," will air on Peacock and broadcast and local cable channels in six markets, including San Diego, Chicago, Denver, Austin, Dallas and Honolulu, during the big game Sunday, according to a Southwest news release.The ad, which appears set in a forest, features numerous guests running to get to their seats after a voice says, "Southwest boarding begins now."   'SUPER BOWL BREAKFAST ...