Pilots at Delta are required to back up any visual approach with all resources available. If a IFR approach is available it should be set up in the box and tuned. If not a extension should be built off the runway.
One thing to be aware of is that operations into smaller US airports is quite different then anything you might find in Europe. You are often cleared for a visual and released to the common freq or tower 30 miles out. How you get to the airport is up to you. Not that many years ago you could get a cruise clearance and it might still be in use. We would be cleared to cruise Bozeman airport from 100 miles out in a 727. Everything after that was up to the pilot.