No, it's not too sweet at all.

*Faye leaned against the table in the galley as Thash got the glasses for them. She was happy to watch him get things ready, and she was also looking forward to a drink*

From a tree on that cloud island. Akira helped me with it, and he drank plenty too. Straight from the tree.

*Though she said it casually enough, she'd hoped mentioning Akira might help persuade Thash to think that drinking the stuff would be perfectly fine*