AITH for leaving my sister's birthday dinner after she gave my seat away?
My sister planned a birthday dinner at a restaurant and invited the whole family. I showed up about 10 minutes before the reservation because I came straight from work.
When I got there, I noticed everyone was already seated except me. My sister told me she had invited one of her friends at the last minute, so she gave them my seat. She said I could either wait to see if the restaurant could add another chair or just eat later.
The restaurant was busy, and the staff said they couldn't fit another person at the table. Everyone just kept talking like it wasn't a big deal.
I told my sister I wasn't upset that she invited her friend, but if there wasn't enough room, she should've called me before I drove all the way there. I wished her a happy birthday, left, and grabbed dinner somewhere else.
Later that night, my family started texting me saying I embarrassed her by walking out and should've just waited or offered to sit at the bar. My sister says I made her birthday about myself.
I feel like if someone invites you to dinner, they should at least make sure there's a place for you to sit.
AITH?