Yeah, it's unrealistic: no parents would send their daughter off for a month with no contact, especially if she's never travelled before. But... who really cares? It's a fairy tale. 
 A lot of the travel stuff *was* very authentic and struck a very strong chord with me. The only thing I really missed were the Canadians, although she definitely got the Taking Up With Random Australians thing. 
 I think it would be a great book to read before traveling, or while traveling. Excellent travel feel, with just enough romance and mystery to keep you interested.