Around 30 Britons are currently stuck at what has been described as "the last festival on Earth" as the coronavirus lockdown takes hold.
Most of the Brits on site in Panama had travelled to the Tribal Gathering Festival to volunteer or work at the event.
But now they fear they will be stuck for months, and claim they've had little help from the British embassy.
They say the recent heavy rains have made living on the beach a nightmare, as without a sewage system they are living in squalid conditions.
The Tribal Gathering was advertised as as “an amazing indigenous musical journey through time and space”.
But it was put in quarantine as the whole of Panama lockdown as the country's first confirmed cases were recorded.
Some managed to leave and tried to get on the last flights back to the UK, but flights were cancelled meaning some are now stuck in Panama city, in hotels and are quickly running out of funds.
Those still at the site include Peter Grant, from Somerset, who volunteered in the kitchens at the festival.
He said the hosts have looked after them well, as the locals left the site, but he added that the government response has left them fearing he could be stuck for a long time.
And it was unclear if they would have food or water.
Mr Grant told the Guardian : “Initially the embassy offered buses to Panama City but we only had 12 hours to decide. We also had no guarantee of being able to get a flight. In the end some of those people got their flights cancelled while they were in the airport queue.”
He said people were not keen to leave the site without knowing what would happen to them next.
“At the time the beach was the safer option for us, and we were never offered those buses again.”
He told Vice : "We started seeing the Army and a lot of authorities, and the police, really then it started to hit me that this wasn't the normal closing down of a festival."
Hannah Bates, from Brighton, who was part of the production crew for the festival, was one of those who got on the buses sent by the embassy on March 20.
She is now staying in an Airbnb in Panama City and says she is struggling with money.
She told the Guardian: “The embassy is a joke. There was a glorified lift-off site and that was it.
"There’s been no help with food, accommodation, nothing. We’re told there are no further plans of future flights for Britons leaving Panama, and now we were being offered lifts back home on flights put on by other European countries.
"Then how do I get home from there? I’ve lost three flights already; I’m not in a financial position to keep booking them. We’re facing months here.”
The Foreign Office said it had helped 85 people return to the UK.
“We are in regular contact with members of the group remaining at Tribal Gathering,” a spokeswoman said.
“We have provided details of available accommodation and have offered safe passage letters to assist in moving there.”
