Is AUTHOR wrong in the post ? POST : TLDR at the bottom
So some background information: my friends and I are all seniors in high school and have been looking forward to grad night for the past two years. My two friends also bought our school’s senior package that includes basically everything (prom tickets, grad night, cap and gown, etc.) for one flat rate; I did not. My school has previously had it at Amusement Park 1 (I don’t know if it violates the rules to specify the amusement park so I’m just gonna denote them as 1, 2, and 3.) Everyone in the school was looking forward to going there for grad night because many kids can’t afford the normal ticket price. 

Unfortunately, the school decides that our grad night is gonna be at Amusement Park 2, which has like 5 rides max and nobody liked. So many students expressed their disappointment that the school allowed seniors to get a refund if they bought a senior package. My friends and I didn’t want to go to Amusement Park 2 at all so I suggested buying a season pass for Amusement Park 3, since it costs the same as a grad night ticket. My friends were enthusiastic about the idea and agreed that it was much smarter than going to Amusement Park 2 and their parents agreed. We talked about this for 3 weeks and they remained enthusiastic about the idea. I then discovered about a sale for the season passes for Amusement Park 3 so I told them and they said they would buy them. I bought mine. One hour later, one friend texts me saying that they changed their mind the previous week (without telling me) and were going to go to grad night instead. They then proceeded to berate me about how I needed to buy a grad night ticket because they didn’t want to go without me. Didn’t apologize once for the fact that they didn’t tell me sooner. So AITA for being pissed at them? 

TLDR: friends agreed to buy a season pass for a different amusement park than grad night. Didn’t and got mad at me for not wanting to go to grad night. 