Choose the role of the destination
King Abdullah Economic City appears in an official tourism itinerary connecting Jeddah and Yanbu. For your own plan, decide whether it is an overnight base, a particular activity destination or an optional idea. Those roles create different transport requirements.
An overnight stay needs an actual accommodation endpoint. An activity visit needs the organiser's confirmed meeting place. A general stop in the city is not yet a complete request, even when the destination fits the broad direction of your coastal trip.
Compare two usable sequences
One sequence might move from Jeddah accommodation to a KAEC property and then continue to Yanbu on another day. Another might make a specifically agreed visit during a longer journey. Write the entire sequence for each version before comparing prices or deciding that they are equivalent.
Keep independently arranged experiences separate from the vehicle movements. A published tourism package may combine accommodation, activities and transport, but its inclusions do not automatically apply to a point-to-point transfer you arrange elsewhere.
Give the continuation an endpoint
If the trip continues to Yanbu, use the actual next property rather than the city name alone. If it returns to Jeddah, decide whether the destination is accommodation or the airport. The direction of travel does not explain the final stop without that detail.
Also decide whether an activity could change without changing the accommodation sequence. Keeping the principal transfers visible makes it easier to revise one experience while retaining the rest of the trip.
A coastal itinerary is most useful when every destination has a purpose. Once KAEC's role is clear, you can assess its vehicle journeys as real stages rather than as an attractive place name inserted into a longer route.