7th Traveler 100%
Travel companies are finally catching up, but slowly. Cruises charge a "single supplement" that punishes the 7th Traveler. Hotels shove them into the smallest rooms near the ice machine. Tours charge them the same as a couple but give them half the space.
For decades, the imagery of travel has been dominated by a specific arithmetic. We see the (the 2nd traveler) holding hands over a sunset in Santorini. We see the Family (the 4th traveler) herding kids through the gates of Disneyland. We see the Backpacking Group (the 6th traveler) clinking plastic cups in a Bangkok hostel. 7th traveler