Sandra Bullock plays a Canadian who wants to marry her assistant (Ryan Reynolds) in order to keep her Visa status in the U.S. and avoid deportation to Canada. In real life, Reynolds is from Canada and Bullock is American.
225 Franklin St, Boston, was the real location of The Colden Books office. The entire main office, including Margaret's & Bob's offices, were completely rebuilt and replicated at Disney Studios in Burbank, CA for pickups and re-shoots in January 2009.
Nowhere does it list Alaska as an actual film location. The film was actually filmed in Boston and on Boston's North Shore. In one of the scenes, you can see the famous Rockport icon, "Motif No.1", the little red shack famous for being a subject of many famous painters' and photographers' work. Snow-capped mountains (or any mountains, for that matter) are nowhere to be found on the North Shore. Those were added in digitally.