- Going Nova: Blowing every spell you have in a single encounter, then demanding that the party rest.
- Camping: Running low on resources and deciding to rest for eight hours.
- Short Expeditions: Returning to town to restock after just a couple hours of exploration.
I've never seen anyone "go nova". I've only seen one instance of camping. Ran a friend through a Fantasy Trip dungeon on a solo adventure and a troll knocked him down to 1 hit right as he fried the troll... so when he woke up, he was terrified to even try leaving the dungeon, so he spiked a door shut and ate crispy troll for a couple days. (Fortunately, no significant wandering monsters.) Short trips to the dungeon, though? Extremely common, and not a problem. Seems like a reasonable strategy.
Let me illustrate using an example that doesn't involve magic. A low-level adventuring party approaches a tower with no visible doors. They find stairs going down 200 feet. Negotiating the underworld mage, they come to a point that they believe is directly below the tower... and above them is a shaft extending farther than their light source can reveal.
Someone gets a bright idea: maybe there's a ledge or something in the shaft that we can hook something on? They take a rope and grapnel, tie it to an arrow, and fire straight up. Wonder of wonders, it does seem to hook on something... far, far above. 50 feet of rope is too short, though, and they can see the tip of the rope dangling well above their reach. If they had tied two or maybe three ropes together, the plan might have worked.
Do they return to town to get more rope? Or does that count as 15-Minute Workday behavior?