Using ChatGPT and Gemini I used the following prompt: Create a one-day itinerary in Savanna, Georgia, for a family of four with teenagers who enjoy various things. Include breakfast, lunch, dinner, and 2–3 activities with times.
I must say, the results were really close. It seems like ChatGPT took the more "popular" tourist-led approach for every event, whereas Gemini took a local-led approach. This was noticable with dining locations versus attractions, where both tools scheduled the exact same.
ChatGPT's itinerary goes from 8:00 am - 7:00 pm whereas Gemini's itinerary goes 9:00 am - 8:00 pm.