IST: The mega-hub where Istanbul is possible but never casual
IST is huge, impressive, and far enough from central Istanbul that the city plan needs adult supervision. The airport can be the destination when time is thin.
Build the access plan first
Istanbul works as a WanderPort when the access plan is simple and timed backward from boarding. Build the outside plan around istanbul city access, metro / taxi planning, then protect the return buffer like it owes you money. Keep the plan tight: one target outside the terminal, or a good airside reset inside it. That is the difference between a WanderPort and an airport hostage situation.
One worthwhile experience with a protected return beats a rushed checklist.
Choose transportation before the adventure
Transportation is the decision point. Use metro / taxi plan, traffic buffer as the frame, and choose the return option before choosing the adventure. Keep the plan tight: one target outside the terminal, or a good airside reset inside it. That is the difference between a WanderPort and an airport hostage situation.
Best use of the layover
Best as a premium airport reset unless the layover is truly long. Keep the plan tight: one target outside the terminal, or a good airside reset inside it. That is the difference between a WanderPort and an airport hostage situation.