I was a bit surprised about their choice of example app. With tour guide/info you need to be re-assured the information you're giving is correct. But asking LLM's to write it for you is a recipe for hallucinations. I built Summer AI to do audio tour guides using old fashioned web scraping and then piping the output through LLM's just to summarize and even then use a couple of extra steps to ensure factual accuracy.

During testing I found any other approach would always inevitably make stuff up.

Not trying to disparage this work. I think it's great that you can build such a thing so quickly. But I wouldn't rely on the info these LLM's provide.