I have not done this with ROAM, but we had a presentation from the ROAM program manager at an SSCA event at the beginning of the month. Basically, it is a video conference app and they want to see the people, the boat, and the documentation. You need to have a login.gov account. If you do not have a DTOPS sticker (required for SVI/PR) then you can buy one through the app.

I specifically asked if we had to be anchored somewhere in particular at Cuelbra, and the program manager responded that was not the the case with ROAM. If the office decided that they needed to do an inspection, they would direct you to the designated location.

Note: People who do not have US documentation may get different treatment.

More at: https://www.cbp.gov/travel/pleasure-boats-private-flyers/pleasure-boat-overview/roam

In general, it was a very positive discussion. They are doing app upgrades every two weeks, but old versions remain compatible.

Cheers, RickG