Majoru Oakheart
Adventurer
But, pointing out the complete failure to provide an explanation for this very incongruous setup makes me an unfun DM, I guess. I'll let my players know, they'll be disappointed in me.
I'm confused. I never said any of that was fun or unfun. You ran what was written in the adventure. It sounds like fun.
Just like it would be fun to walk up to a door with 2 Hill Giants guarding it and Tug says, "We guard throne room!" Cog follows with, "Where your escort?"
Then having the PCs come up with some lies to get past the door, rolling a deception check and then getting past them while laughing at how easy it is to fool the stupid Hill Giants as a bit of a light moment before the epic battle that is coming up.
It might NOT be fun if those doors are guarded by elite, power increased Storm Giant guards who are smart and won't allow any excuses to get through and the only way past would be to battle them. They might do so much damage that the PCs might not survive the combats that come after it.
Though, that absolutely would make the most sense and would be the most "logical" thing to happen.
But my point is that the most obvious thing to happen isn't always the most fun thing to happen(sometimes it is). Plus, I'm 99.9% certain no one in my group will even care that there are Hill Giants there (especially when they see there are a bunch of other giants visiting right now). Even if they ask (on the bizarre, off chance that they do), I can come up with a reason that makes enough sense to pass muster on a moments notice (a couple of them have already been said in the thread. My favorite one being that they showed up as emissaries but no one respected them enough to talk to them and they were getting annoying so they were ordered to guard a door that doesn't normally get guarded just to get them out of the way and they were stupid enough to listen to everyone).
They'll only be "on screen" for a couple of minutes at most, either way. It isn't long enough for their backstory to really matter to the adventure.