I only played about 30 minutes of the demo but, so far, FFXV seems like a cool, kind of weird game. Stuff like (not really spoilers but stuff that's nice to discover on your own)
It all gives the game a really unique and charming vibe. I like what I'm seeing, looking forward to playing more of it tomorrow.
Also fashion.
the little 8-bit sprites of the party on the shop menu that dance to let you know if they can use the weapon you've got selected, or how renting an RV to sleep in gives you a 20 second scene of the guys checking the place out, then seeing a generated collection of photos that Prompto took during that day. Or walking into an American style pit stop diner with perfect english language signage, a black owner, and white and east asian customers... and distinctly japanese style food plating.
Also fashion.