“We’ve been in this tent for five months,” says a 21-year-old Swiftie waiting outside Buenos Aires’ River Plate Stadium. The rumble of a mixing truck can be heard through the tent’s thin fabric, while a large group of ants hopes for a snack to fall to the ground on a nearby sidewalk. The fan prefers to remain anonymous, because her father doesn’t know she’s been spending many afternoons—in between working a part-time job and taking college classes—in a small, makeshift encampment alongside her fellow Taylor Swift loyalists since June. “I usually tell my dad I’m at a park drinking mate with somebody, or visiting a friend of mine who lives near the stadium,” she adds.

She’s hardly alone in her dedication. Ahead of Swift’s three Buenos Aires shows, which kick off November 9, as part of the Latin American stretch of her Eras Tour, hundreds of fans have been occupying four tents outside the stadium, taking turns in carefully planned rotations. Most of the campers have general admission floor tickets, and the goal is to be as close to the stage as possible when the show begins.

An internal spreadsheet, created by two organizers and updated by assigned administrators, keeps track of around 60 folks per tent. Most of them are young women, but no one under 18 is allowed. Based on a ranking system gathering everybody’s total time, the longer you’ve been in a tent, the higher the chances of being one of the first in line. A fan named Carmen tells me she’s spent more than 300 total hours, or 12-and-a-half days, in the tents.

Along with boosting economies wherever it lands, the Eras Tour has sparked many Swifties to take drastic actions. They have filed a lawsuit against Ticketmaster and Live Nation over allegedly illegal business practices. They have mobbed parking lots outside of American stadiums during shows, looking to find some communion even without a ticket. Some fans who couldn’t score tickets have even waited near venues for hours just to buy merch.

In Argentina, the Swiftie devotion is taken a few steps further. Their commitment is real: The tent dwellers have dealt with public criticism, rowdy soccer fans, and the unforgiving realities of sleeping on concrete. Some have been camping out since before tickets went on sale, showing up with their tents to secure a spot. Once those fans were featured in local TV news stories, other groups followed suit. But following that initial rush of interest, most of these Swifties have stopped doing interviews, and there’s a strict no-recording policy in place for media and content creators looking to film them.

The general code of practice among the camping fans is that people should only spend time in a tent whenever they’re free, and no one is mandated to drop their responsibilities altogether. “The fact that there are so many people makes things easier. We all have different schedules, and you fit yours amongst them,” a 20-year-old named Irina says, adding that her mother is OK with her camping as long as she doesn’t fail her college tests. So while no fan is required to stay in a tent 24 hours a day, the group’s internal rules explicitly benefit those who are willing to go the extra mile.