Overall, the entire story felt a bit hollow. I had no reason to connect to anything in the game. Nothing in the story was explored in depth. The hotel as a set-piece was wasted. The whole narrative was shallow. The game shows potential, but it is so incohesive and unimpressive that it flounders as a whole.
Aside from those differences, the game… is basically Terraria. Unfortunately, the game doesn't have the massive variety and polish of Terraria's crafting system, doesn't have the interesting biomes of Terraria, doesn't have the crazy enemies of Terraria, and it doesn't make allusions to Lovecraftian horror. That isn't to say Dig or Die isn't fun. It is. I had a legitimately good time playing it, and that should mean something.
Would I recommend you buy Little Dragons Café for a child at its current price point? Absolutely not. There is plenty of content and it's a decent game, but there are a lot of other games that are on-par with this one that are selling for less than half the price. Until the price comes down, I can't in good conscience recommend that you buy it, and that's a shame.