Not invited on family vacation

Last time I was invited on family vacation was 2023, I couldn’t go last minute because of work. Last year they all went on a cruise to Mexico, this includes my dad, his gf, sister & her bf, 2 brothers, & 4 cousins. Wasn’t told anything about it. Just heard they’re going to Mexico again & wasn’t told anything about it. How would you guys feel about it? Should I be upset ? I feel like I have mix feelings.