I have mixed feelings about this snack. The melon and dip were good BUT, I truly dislike the tajin seasoning, which has a rather chemical flavour (I feel the same about lemon pepper seasoning, and citrus flavouring essence in general).
The yoghurt dip was good, though I used a dairy one, and went quite well with the melon sticks.
That being said, as another poster mentioned, this makes a LOT of sticks, and might be best used as a side or snack for a large gathering (let people put the dip on their plates though).
If I decide to try again, I will make my own seasoning (highly recommended if you don't already have tajin- I did and now I know why it doesn't get used!), and only use half a watermelon (save the other half for a salad with feta and mint, it's delicious!).