Hello all! So normally, I write stories that take place in fictional worlds. I make my own fantasy maps and create my own cities. But the current fantasy novel I'm writing takes place in America at an undisclosed year in the future. The country has been ravaged by war, global warming, and illness and appears much different than our world today. The current coastlines are flooded, and many major cities have been destroyed. My MC&Company will be traveling across the country, from a place near Denver, Colorado to Orlando, Florida, making many stops along the way. But my question is, should I actually use the real cities? I know nothing about Denver (or any of the places they'll be stopping at), so I fear that I would write its description poorly and anger residents of Denver. If I did use it, how much research would I need to do? Would it be okay to basically bullshit it, since the story is set so far in the future? Or should I just opt to use a completely fictional city nearby to avoid all that? I will be using Orlando, because it's going to be basically destroyed. Hardly anyone lives in Florida in my story because the state has become so flooded and damaged by hurricanes. Any advice would be greatly appreciated.