[Q] What is the immigrant visa interview procedure like if I do decide to do consular processing?
Most EB-5 cases probably choose to do consular process for many reasons we will not address here. The procedure is the submission of necessary documents and showing up at the Immigrant Visa section at the American Embassy in your country of residence and submit the docs, do fingerprints and then stand at the bank counter like window and answer consular officer's questions for about 10 minutes. That's it. But the waiting in between can take total of 1 to 3 hours.
Sometimes, certain American Embassies in certain countries might not be too familiar with EB-5 Regional Center cases, but with an approved I-526 immigrant petition in hand, consular officer must either approve the case, ask for pertinent documents or return the I-526 approval back to USCIS if the consular officer sees a clear failure to meet the requirements or a fraud.