I have ChatGPT Pro and it sources every single thing. For my Asia trip right now it's been helping me every single day to figure out optimized routes on what to do and where to go (if I feel like it, not to say I don't wander around too).
It just makes stuff up (or gets it from somewhere, who knows) and then links to a tangentially related page as if it was the source. Either that or it identifies the page as being a source it wants to use, and then summarizes it incorrectly. Not sure the order of operations it’s doing internally, but regardless the citations are bullshit.
I suspect the HN techno-brained crowd will not appreciate it, many are quick to throw away their human experience
Not sure how they're perceiving using ChatGPT to plan an itinerary but I'm also doing all this while using ChatGPT. As I said in the sibling comment, it's a faster Google search and route optimizer, not something where I type in "make me an itinerary for X city" and follow whatever it shits out.