Most people are currently in the dungeons of Prydain. Unless you want to confront the Horned King (btw I don't remember the film completely so kinda going on imagination here. Only the castle (and surrounding grounds) are accessible and the Horned King wants to make a skeleton army by use of the the black cauldron. And I remember that the main character of the film first met in the dungeons, but that's it. I can sent some guards to bring Reno to the dungeon, but Reno will just kill them.

Also LB, was Saint going to join or... because his character would come into play in Prydain.