We cleared into St. John in June using the ROAM app, and after reporting arrival, we didn’t hear anything for about an hour. We were in the bay by Hawksnest and Gibney, so I called them, and they said they had up to 24 hours to respond to the Arrival request. However, within three minutes, we got an approval. There was no video interview. I also looked into the sticker Rick mentioned above, and the boat we were on was not a US based vessel, so we did not have to have it. We chartered through Moorings. Hope this helps!