Ok actually the reverse seems true about lustlords palace. I can only go in there during the day and I've already been there and I can't go back in now it's night. I've done the Succubus council but not the orc one, and can't get into the southern hall anyway to do orc (Says some kind of orgy is going on) and cant enter via ladders either. What do you mean by bed rest? I've tried accessing the bed but nothing happens. Walkthrough isn't helpful here. It just says to progress to next day but I can't find how.
Copy-pasting from an older comment all the activities there are to be done:
Did you rest on your bedroom and get a scene between Qum and Yarra? (your bedroom is in the western building)
Did you talk with Fheliel? (Elf Queen of Ghenalon in the building to the east)
Did you search the Fucklord's room? (room in the same building as yours)
Did you search the Lord of Blood's room? (room in the same building as yours)
Did you negotiate with the Orc council? (one of the rooms in the main building to the south)
Did you negotiate with the Succubus council? (one of the rooms in the main building to the south)
Did you sneak into the Lustlord's palace? (a ladder in the underground tunnels)
Did you find the Succubus Village? (a dead-end hallway in the underground tunnels, Yarra will comment she can feel an illusion, interacting with the wall will then have her unlock the way)
You need to do one activity to pass time, you don't have access to the main hall during the night of the Incubus King's half-assed orgy, so you can't do the meeting with the orc council nor with the succubus council, but this shouldn't softlock you since there should still be other activities available (as far as I know there isn't anything preventing you from sneaking into the Lustlord's palace or visiting the succubus village during the night if they haven't been done yet, if you can't do those please tell me the exact dialogue that is blocking you).