You need to play them with the ACTUAL consoles to get the whole experience. The order is not really important, as long as you play Kingdom Hearts, Kingdom Hearts 2.5, and Kingdom Hearts 3. The rest are all just story background.
Never had to deal with those. Thank goodness......I HAVE had to deal with things poking me in the morning, though. Claws, remotes, mice, bottles, belts, and fingers. They suck to get poked with.