Situated on the banks of the Cuyahoga River, Lockkeepers is sort of the Cary Grant of Cleveland dining rooms -- handsome, refined, and yes, charmingly old-fashioned, with a masculine Arts and Crafts decor and a big menu of upscale American-dream foods, ranging from foie gras and caviar to prime rib and porterhouse steak. The wine list is serious, the service is professional, and -- as you might expect -- the air is heavy with the perfume of money. So how to finance this splurge? Preferably on someone else's platinum card. That always makes the champagne just a little bit sweeter, mais non?