My party were rather foolhardy and have got themselves knocked out and captured. Their captors want to keep them alive for a bit to question and then to sacrifice.
The party expended pretty much all their resources in the battle and so without a long rest are not going to have much chance of escape. However, it also feels wrong to say "you spend the night tied up in a stable and now you have all your spells and HP back". Which would make escape probably quite easy and anticlimactic.
Is there a way to reflect that they got some rest, but not a good night’s sleep?