Water, Water Everywhere

Wing Nga Is a Female Pandaren NPC, she can be found outside the inn keeper in Halfhill, approximately 30 yard on the left side of the mail box

Oddly, this quest is available in all weathers. Even storms.
Not only are you flying a kite in a storm, you're riding on it.
Throwing buckets of water to water the plants. In the rain.

If you are "buddies" with Farmer Fung, Wing Nga offeres you a "high-altitude kite" for this quest: this gives you a better vantage point. You can see ALOT more of the heartland with the special kite which lets you finish the quest much faster.
If you are "good friends" with Farmer Fung, you can use the "swift yellow kite" which is about twice as fast as the ordinary kite. You see the same area, but cover ground very fast.
If you are "best friends" with Farmer Fung, you can use the "dancing green kite" for this quest. This kite will make your toon dance the whole time while on the quest.