American accent

Nowadays am planning to learn american language with its fluent accent, for that I should visit America. So am searching about this place and planned a trip to Chile, South America. Its so wonderful place and famous for fly fishing.....I also can enjoy other activities like trekking, hiking, skiing, etc. Can you guys plss suggest me any of the best tour options?? One of the interesting tour I stuck with is: http://www.ekoventure.com/trips/south_america-chile-porto_raul_marin_balmaceda-eco_tours-wildlife_tours-fly_fishing-boat_cruises-exploration-active_sport-fundo-los-leones-15002
How is it??