Visa

Citizens of the European Union, Andorra, Iceland, Liechtenstein, Norway and Switzerland only need their identity documents to enter Portugal.
All minors, in addition to their identity document, must present parental authorisation to travel.
For countries that are exempt from visa requirements to enter the Schengen Area, for stays that do not exceed 90 days, a passport valid for more than three months after the end of the stay is required.
Following the Convention implementing the Schengen Agreement, passengers travelling to or from another Schengen State do not need a new visa as this is considered to be an internal flight.
Citizens from other States need a visa to enter Portugal, which may be requested from the Portuguese Consulate or Embassy in the respective country, for stays of up to 90 days.

Further information at:
Please be advised that if visa applications are submitted less than 45 days before the event, delegates will not be eligible for a refund of registration fees in the case of a visa refusal. We strongly recommend submitting visa applications well in advance to ensure timely processing and avoid any complications.