For my emotional appeal I'm thinking about using the idea that you start your trip in NYC, a fast pace city with must see attractions, also focusing on the fact that NYC is kind of an American milestone filled with things you've heard about your entire life and just got to see the history of your country (i.e. Statue of Liberty and Ground Zero). And after traveling down the entire east coast you'll finish your trip at the beach in Miami, experiencing Latin-influenced culture. A relaxing end to your trip with feel good Latin music and food.
**Could also play off weather differences
Attractions in NYC:
Central Park, Statue of Liberty, Empire State Building, Metropolitan Museum of Art, Rockefeller Center, Times Square, Museum of Modern Art, American Museum of National History, Grand Central Terminal, Radio City Hall, Ground Zero, etc.
Attractions in Miami:
Jungle Island, Miami Seaquarium, Villa Vizcaya, Fairchild Tropical Botanic Garden, Coral Castle, Miami Art Museum, Miami Tower, Venetian Islands, Venetian Pool, Intracoastal Waterway, etc.
Stops Along the way include: Washington DC, Charleston, Savannah, Jacksonville, & Orlando