Internships are usually mission trips of 30-90 days. A tourist visa in Rwanda for U.S. citizen can last up to 90 days. Tourist visas are $30 for 30 days and $100 for 90 days. You can apply online for visas at www.migration.gov.rw before you arrive. Internships allow you to immerse yourself into the culture of Rwanda and to get to know the students at Joy Christian School better. If you are able to stay the full 90 days we highly encourage it!