Here is an example about the present simple used for a series of planned actions in a Martinet's grammar book:
We leave London at 10 next Tuesday and arrive Paris at 13. We spend two hours in Paris and leave again at 15...
I think this is an itinerary. I wonder whether the present simple is the most appropriate tense for itineraries and whether we can also use the present continuous to talk about it, i.e., We are leaving... and arriving.... We are spending...