AQ Kafé is set to open its doors tomorrow at 1800 Broadway, offering the Columbus Circle area a smörgåsbord of, well, smörgåsbord fare. Meatballs, smoked salmon and other Scandinavian faves are available in sandwiches or on platters paired with fresh-baked bread, and there is an extensive selection of pastries as well. To celebrate its opening, the cafe will be offering free coffee all day tomorrow. In additional AQ news, the first location, set in the Scandinavian House (58 Park Ave.), has closed and is now an outpost of Smorgas Chef.