New York in the summer is not the place for overpacking. It is hot, crowded, loud, and walk-heavy. You move through airports, trains, apartments, sidewalks, stairs, ferries, museums, and restaurants, often all in the same day. What you bring with you should support that, not slow you down. For this trip, we traveled backpack only, which is how we typically travel. One backpack per person for the entire trip. No rolling suitcases. No extras packed out of anxiety...