Meem Qween

I suppose that you have already talked to them about this thing, right?

The only thing that comes into my mind is that they only do so because she is still a little girl and so maybe they satisfy her (this is just my thought, i'm not judging, you can answer me with what you want ), but that doesn't mean that they don't have to tell no only to you, i think they should find a balance; that is to say no even to your sister. Anyway, answering your question, i agree with you, though i don't have any personal experiences because i am a only child  

Haven't really talked to them about this, yet. Although there were times when they went too far and later realized it.

Little sis isn't really that much younger than I am, only younger by two and a half years. They still do that with her, even though she's going into eighth grade soon and I forget when they started saying no with me...

And I'm mainly upset because Cheddar's has really good food

I had a similar case once. It was about chores. I was/am a gamer and my brother and sister weren't (well my brother was as well but not in the same amount). So they had more activities planned outside the house than me. I was also the early bird of the three.

So when a chore was available, guess who was the lucky victim? Me. After all, I was awake in the morning, just "gaming". Easily accessible and had loads of "free time". Of course I complained about the chores but I was just lazy. Worst I wasn't particuliary good at these chores, so I had to deal with critique because it wasn't done in the arbritarely "rules of the art". I just took the critique and did the chores the best I can, I suppose. They're chores after all, nothing big. I can deal with it.

One day my mother accused of doing a bad job because I was lazy and didn't want to do the chores. I broke down and cried. My mother sat down and asked what was wrong. I finally could do my story, a story I didn't even know I had. How about I felt that my parents put my hobbies lower then those of my siblings, how about I was being punished with more chores because I was up early and because I wasn't spending money left and right allowing me to not take a job during the hollidays.

My mother was surprised my story but also with her behavior. She didn't realise before that they just took the most available person without thinking if it was fair in the long run. Or how about I got conflicting instructions. It took them both of them a bit of selfreflection and time but they changed their ways.

So why am I telling this? The cases may be silly at first but they might hide some more severe issues. Also your parents are probably willing to listen to your story if you have a good one to tell. They are human and make mistakes. Sometimes they don't even know it and would be willing to change if they knew about the problem. I would advise you to talk with your parents about it.