Please don't apologize, your opinion does not bother me.
The place is surrounded by water, but I was wondering why it was dripping. And there was only one drop..
I don't know what chakra drips are.
I'm not appoligising because our opinion is different, i'm sorry that your theory isn't correct, I'd have liked it if it was Sakura's tears.
The place is always dripping, early on I used to think the place was meant to represent the sewers with leaking pipes, It was probably because of the Anime, they always showed it like a cold card damp place with water dripping everywhere, so I'd just figured it was the sewers, and represented the Naruto's mental state from growing up alone, and hated and avoided. Turns out that's just how the seal is represented, with the dripping water meant to represent the chakra escaping from the Bijuu into the Hosts own Chakra pool or something like that.