The ambulance service has declared a critical incident at a popular half term destination amid an influx high number of tourists in the area.
South Western Ambulance Service said paramedics are under "extreme pressure" and called on patients to dial 999 only if they are in a life-threatening situation.
As a result of the pressures, the NHS Foundation Trust warned some people may need to wait longer than usual for an ambulance, Cornwall Live reports.
The Trust covers the counties of Cornwall and the Isles of Scilly, Devon, Dorset, Somerset, Wiltshire, Gloucestershire and the former Avon area (Bristol, Bath, North and North East Somerset and South Gloucestershire).
It serves a total population of over five million people and has 94 ambulance stations.
The service, which responds to around 2,650 emergency incidents a day, tweeted: "We have declared a critical incident due to extreme pressures on our service.
"As a result, some patients may wait longer for an ambulance while others could be advised to access alternative services if their call is not life-threatening.
"We need you to only call 999 in a genuine, life-threatening emergency so we can help those most in need."
The critical incident comes after a relaxation of coronavirus lockdown allowed people to travel and stay overnight at holiday spots around England.
On May 17, Step Three of Boris Johnson's lockdown roadmap saw hotels, B&Bs and other tourist accommodation facilities reopen.
People from different support bubbles and households are also allowed to meet indoors - but the rule of six remains in place.
Yestreday, thousands of Brits headed to the beach as temperatures finally began to rise after a washout May.
Beaches in Dorset and Sussex were filled as people enjoyed the first long weekend since lockdown restrictions were eased earlier this month.
City centres also drew large crowds, while pubs and restaurants are expected to enjoy a bumper weekend following a torrid 15 months.
Many people are opting for staycations as most of the world - with a few exceptions including Portugal - is excluded from the government's green list - meaning people have to quarantine for 10 days on their return.
A South Western Ambulance Service NHS Foundation Trust spokesperson said: “If you have a non-life-threatening but urgent medical problem, please call NHS 111 who can advise you on the most appropriate place for care and also call an ambulance if necessary.
“Our hardworking ambulance crews, control room staff and volunteers will continue to prioritise anyone who is critically ill and ask that you help us help you by only calling 999 in a life threatening emergency.”
