So my sister has 2 kids and I have 3. We take my dad with us places often. Yesterday we took him to the renaissance festival with us. On the way there my dad casually said he spent $100 on my sister’s kids yesterday. Then later I gave my kids each $25 to get something it wasn’t a lot but I spent hundreds on school clothes and didn’t have more to give. While watching a show my dad asked my youngest daughter who is 9 where she got the bird whistle and how much? She told him then he said my sisters daughter (11) would like it. So he leaves the show and goes and buys her one. He also bought my nephew a necklace which when he got back he goes now I got all of the grandkids something. Here’s the thing… he didn’t buy my kids anything which are is grandkids too. While my kids didn’t say anything I could tell that they were hurt. We even paid his way in which was only $27 but at one point the kids said they would like ice cream and I said I didn’t have it and we went to another show. Then on the way home my niece calls him and says hey pappy what time are you taking us for book bags. He goes “as soon as I get back I got you guys something.” Again I could tell my kids feelings were hurt. I didn’t talk to him yet because I don’t know if I’m over reacting. My parents were this way with my sister and I growing up too. My sister got everything where I did not and I don’t like that he’s making my kids feel as hurt as I used to be. Their excuse prior to them always buying my niece and nephew things was that their dad is in and out of jail and my sister works but doesn’t buy her kids things. But she does buy them things my parents just buy stuff for them because she expects it. I don’t want him to buy my kids things though that would be nice and help out a ton as I’m not rich but I really just want him to not mention that he is buying my niece and nephew things in front of my kids age 9,11, and 12. So AITA?