They could implement places like the Hags lair where you cannot rest and block your path behind you so you can't just cheese it by running out.
I recall that in later parts of the game it is supposed to cost more to long rest but with how easy it is to pickpocket traders and generate an obscene amount of money and camp supplies since they reset on long rest and you can pickpocket way more than you need to rest.
This could also be easily fixed by not letting you pickpocket ~1000 gold with an ability check of 10. Between the ring and proficiency and dex you are easily looking at characters that can almost never fail pickpocketing gold.
