It is not guaranteed you will get an approval. The petition may also be denied for a number of reasons. Processing times are all listed on uscis.gov.
NYC EXPERIENCED IMMIGRATION ATTORNEYS www.myattorneyusa.com; email: email@example.com; Phone: (866) 456-8654; Fax: 212-964-0440; Cell: 212-202-0325. The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.
Generally there are not interviews. 3 -5 months is an estimated waiting time. Consult the Dept of State's visa bulletin.
Alexus P. Sham firstname.lastname@example.org (917) 498-9009. The above information is only general in nature and does not constitute legal advice. It does not create an attorney-client relationship.