If, in an airliner, one wanted to fly an non-RNAV arrival that was point to point - for example the CDF 1A in to EGFF (Cardiff) as per this approach chart...
(Yes - I know it a little out of date)
.... how would you fly that inbound (186) track? From RETSI-AMRAL-RILES-DOBEM to ensure you stayed on the correct course?
Cheers