If I didn't have such a reputation before, I certainly do now!Ouch! 90 minutes isn't long! You must have rat bastard DM cred for that one.
I don't feel like I did a very good job foreshadowing the t-rex. They learned a bit from some vegepygmies and Chief Yorb of the grung but weren't expecting the King to be able to teleport or breath wasps. So yeah, those were kinda "gotcha" moments. I wish I'd foreshadowed them better ... like big gaps in the trail of dino footprints or something. I did have him roar ominously in the distance a number of times, but that was about it.I'm curious, how did you present/foreshadow/describe the King of Feathers. A teleporting wasp-breathing massive t-rex is just so bizarre...and ToA doesn't offer any backstory to help the DM make sense of it that I've found. I'm at a loss for giving it narrative "weight" (to avoid it being "aaaand here's a wacko teleporting wasp-breathing feathered t-rex...why? who cares!") Did you invent something yourself?
If I run this adventure again, I'll definitely build up the King a lot more.
It's also interesting to see what is easy for them and what isn't. They seem to struggle with the big beasties (even the froghemoth managed to swallow two of them whole, though they survived that) but have little trouble with the more intelligent foes, oddly enough. So they've been absolutely trashing the yuan-ti, for instance, despite being outnumbered most of the time.