"Pronunciation Note:
When plus has a negative meaning (no more), you never pronounce the final -s."
Does that mean that the final -s is always pronounced if the meaning is positive? Is that how French people distinguish between 1) J'ai plus du temps and 2) J'ai plus de temps (where 2 is really Je n'ai plus de temps with the ne omitted as it often is in conversation). How do native French listeners tell the difference?