Someone does tell Crono that "The Queen is waiting for you in her room" so that indicates that it is in fact her room. But it is my understanding that in medieval times it was considering acceptable for married couples to sleep in the same bed. And the King and Queen of Guardia in 600 AD did clearly love one another.
There are probably way too many VGL scenarios in Chrono Trigger and Chrono Cross to discuss them all here. That kind of thing could have its own thread.
So how about Final Fantasy in general? Ever notice that the towns you visit always have better equipment (weapons, armor, accessories) than the towns before it? And if an upcoming boss has a specific weakness, a weapon that can exploit that weakness is available to either find or purchase before you fight said boss. You might as well just have the boss hand you a weapon and say "this is the weapon that is most effective against me."