The Make Camp moves begins as follows:
When you settle in to rest consume a ration. If you’re somewhere dangerous decide the watch order as well. If you have enough XP you may level up. When you wake from at least a few uninterrupted hours of sleep heal damage equal to half your max HP.
It is unclear to me when exactly this move triggers. Does the party "settle in" simply by deciding to do so, or does some in-fiction event need to happen? Once the decision to make camp is made, can the move be interrupted or aborted by outside influences?
For example, if my PCs have the XP needed to level up and decide to make camp but are immediately attacked or otherwise harassed by monsters/NPCs - they certainly don't get a few hours of uninterrupted sleep - do they level up or not?
Updated: The Level Up move description independently resolves my question as it applies to leveling up specifically. Restoring HP is also explicitly tied to uninterrupted rest. I do not know if there are other mechanical effects tied to Make Camp, but if there are this is still a worthwhile question.