If you plan on travelling to FAB11 from a country outside the US you may require a visa to enter the country. We can’t list all of the rules for each country here but a useful site to check is http://www.visamapper.com. Although it’s helpful, you should contact the local US embassy and your Foreign Office or relevant government institution.
We are currently finishing a system to manage Invitation letters for participants who need them. In the meantime, please contact us at info <<at>> fab11 <<dot>> org and we will provide a letter for your needs.