Earlier quoted context omitted.
I found that Deep Research mode in Gemini was able to give me a well planned 4 day trip to a major city. I told it my preferences and of the group members, where we arrived and departed, at what times. I gave it my itinerary and then asked it to plan two new itineraries and also suggest a location to book a hotel that was convenient for the early flight on the last day. I went away for 20 mins and gave me a 20 page d…
Or maybe there are just a few complete trips to major city in the training data that it could copy from? I imagine major destinations are much easier.
As you guessed, there's a ton of info in the training data on this topic, but there's some value in being able to see it on one place with different options.