That child needs an old fashioned ass whooping.
Don’t go to the watermark WITH them. Maybe meet them there.
Pray the neighbors sell and move!!!
Let us know what happens 
Do not go! Trust your gut.
They are your neighbour not your best friend keep it that way it’s better
I’d have an honest mom to mom talk. Probably forget the water park!!!
I would go but I always take my own vehicle so I can leave when I want to…
Oh no i would say do not go, i would hate to be around a little girl that acts like that and that is like that to my child i would not care if she is a neighbor or a family member my child is not going to be around a child that acts that way and that treats her that way. Please dont go and put you or your child through that, that little girl does not deserve friends if she is going to behave that way.
My children have a cousin by marriage through me and their step dad on his side, and evrytime she comes over (very rarely) they always want to have sleep overs , well when the sleep over happen they start to not get along, i guess my children said the girl is BOSSY and RUDE, this is the only kid my kids hang out with or USED TO because after this it happened twice with my kids complaining about her i told my kids that from now on there would be no more sleep overs at all so they were absolutely not allowed to invite her for a sleep over or even to come and hang out. Unless her dad and her come visit of course. Just not her by her self.