travel light - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Take little baggage; also, be relatively free of responsibilities or deep thoughts, as in I can be ready in half an hour; I always travel light, or I don't want to buy a house and get tied down; I like to travel light, or It's hard to figure out whom they'll attack next, because ideologically they travel light. The literal use dates from the 1920s, the figurative from the mid-1900s.