Lol. Well, let your character do that.
I would also prefer to just leave; we decided to talk to them. Regarding the naval battle, there's this point. I don't think the soldiers will be so eager to fire at a ship with their commander on board, so detaching from them directly will be easier. As for the battle on the ship itself, I don't know. But we have a numerical advantage. But it's the NPCs who decide, of course.
/ Why? The wave acts along the line, away from the caster. We'll stand behind and that's it.
If you're afraid that the entire palace will collapse, then you need to determine which wall is not load-bearing. Of course, if there's an arch or column that clearly supports the ceiling, then you can't shake it.
But otherwise... Well, in the worst case, the room behind the door will collapse. But it's not scary; we have two more just like it. /
Added after 55 seconds
— I swear before the Lord, we will do nothing to your ship or its crew if you peacefully fulfill all our conditions.
Небо – угроз не слышит
Небо – ведёт особый счёт
Небо – тебя найдёт