Holidaymakers given Italy travel warning as new requirements introduced for hotel check-ins

However, British children travelling without their parents or guardians do not require any special authorisation, even if they are residents of Italy.

This differs from the requirements for Italian children, who need a document stamped by local police when travelling without parents or guardians.

"Travelling with people aged 17 and under If you are aged 17 or under, you cannot check into hotels or holiday accommodations without an accompanying adult," the Foreign Commonwealth and Development Office (FCDO) cautioned.

"British people aged 17 and under travelling without their parents or guardians do not need any authorisation stamped by the Embassy, even if they are resident in Italy.

"Only Italian children travelling without parents or guardians need such a document stamped by the local police.

"See further advice on travelling abroad with people aged 17 and under, or travelling to the UK with people aged 17 and under."

Passport stamping is crucial for visitors entering and exiting the Schengen area, particularly in Italy. Border guards rely on these stamps to verify compliance with the 90-day visa-free limit.

Travellers should ensure their passports are stamped correctly to avoid potential issues during their stay or future visits.

If a passport is missing a stamp, travellers should present evidence of their entry or exit, such as boarding passes or tickets.

They should then request border guards to add the date and location to their passport. This helps maintain accurate records of time spent in the Schengen area.

The FCDO added: "To stay longer, you must meet the Italian government’s entry requirements.

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"Check which type of visa or work permit you need with the Italian Ministry of Foreign Affairs. You’ll need to apply and then book an appointment.

"If you’re in Italy with a residence permit or long-stay visa, this does not count towards your 90-day visa-free limit."

It comes as the implementation of the new EU Entry/Exit System (EES) for non-EU nationals, including British citizens, travelling to and from the Schengen area has been postponed. This delay affects all travellers from outside the EU.

The EES, designed to enhance border security, was set to introduce new entry procedures. Officials have yet to announce a revised implementation date.