If you must apply for a temporary non-immigrant visa to the Retro Summit 2016, you are advised to apply as soon as travel to Austria is contemplated and not later than 3 months in advance.
APPLY EARLY! The congress secretariat offers an official letter of invitation for 2016 Meeting attendees. The letter of invitation, though not required for the visa application, can assist as a supporting document. Present this letter of invitation from Retro Summit 2016 to the consular officer during the visa interview. This letter by no means guarantees admittance into Austria, but can provide compelling evidence for immigration officials to consider.
To request a personalized invitation letter – please fill in here