I have to admit I never watched the kids movies including the Arthur and Mini Moys (or whatever they are called) ... though I do know of them of course. I also do not think it is necessary to know the movies - you may be familiar with the location itself.
The movie also takes a lot of time to get things going. Or getting it on - no pun intended. And it walks quite the fine line - while being a horror movie (and it does show things in explicit violent manor, though I have seen worse/better), it also has this sweet romantic story. With the most understanding girlfriend ever - of all times! No seriously - feels like she waited a century for our main guy to finally wake up to her ... well body and other things on her.
While I reckon that romance does not come off good with most viewers (and it has its flaws), I can somewhat understand the whole relationship. If you grow up with a person, sometimes you miss how they grow up ... how they bloom and all that.
There is a sort of resolution towards the end ... an explanation. But is it really telling us all we need to know? Also I am quite forgiving, but I myself was shaking my head multiple times ... yes people in horror movies do not always pick or do the best thing ... but if you run and lock yourself up, instead of walking a few feet to warn your friends? Maybe it is me, but that was one of the worst things I've seen in a movie ... period! Not to mention the convenient placing of ... well to bee or not bee (my pun may ask) ... anyway, there are a lot of moments that are really really tough to swallow ... the effects are good and I do like the actors anyway ... even if they made me cringe a lot.
Interestingly enough I reckon Bessons daughter is in this ... he produced the movie too I think. Well she is not the problem the movie has ... or rather the problems. Suspend your disbelief and really set your expectations low ... even lower than that ... maybe a bit lower ... yeah about there ... hey you've been warned (and they have been too - pun intended)