Alcohol evaporates faster than water. I use a StarSan solution and I haven't had to add any either, after the initial filling.
To answer the OP's question, I think only time will tell. If the fermenter was tucked away somewhere, like in a closed closet, I bet it will be ok. I had an airlock pop off my secondary and it spilled everywhere. (I was an idiot and fermentation wasn't quite finished) I didn't know it happened for several days and it turned out fine.