Is AUTHOR wrong in the post ? POST : Background: In my college there is very popular Lan-party and I work there as Console Supervisor. I basically make sure consoles work with no problems and if someone has questions or problems with any of consoles, I am the guy who has to go to help there.

My friend group is usually take part on Lan-party and there is around 7 people in that group (me including). Because the group is kinda big we usually get one row of 6 seats. But couple of my friends bring their brother, little sister (underage) and boyfriend to the Lan-party. More people the merrier, right? At the Lan-party there is always pre-made seating positions to everyone but you can switch around with your friends.

Week before even registering for the Lan-party my friend Sam (name changed) posted message to our chat: "let sit this way at the lan-party: I want to sit next to my sister and boyfriend so seating should go like this: me, my sister, John (Sam's bf), Jen, Jen's brother and someone. Because there is so many of us for one row the rest can be somewhere close like: someone (most likely Disco (me)) , Paul and Jeff (Paul's bf). Be cause me and Jen has overwatch sessions anyway so I want to sit to close her too xD"

Sandy awnser "sounds good to me, If possible I want to have the hallway seat because I can have more room :) "
Paul "me and my bf don't care where we sit"
I didn't awnser at the time because I wanted to make sure that I even got PC place from the party.
Others like Jen didn't answer too.

The day of registration:
Registration opens and I get my reservation to pc place. 
I messaged: "Registered! Oh, I forgot mention that I need the hallway seat because the I work there and I need to constantly get up from my place and the space between desks are tiny, so I don't want to constantly walk back and forth and push peoples seats accidentally and bother them. Other wise I don't care where I sit."
Sandy "I thought we already agreeded on this position  *tagged Sam's message*. Because you work there you can ask yourself own hallway seat, because group is gonna get splitted up anyway, so we have changes to get to seats"
Me: "Yes, a chance, that doesn't mean we must have two hallway seats. I just thought that I just wanted to make it easier and more comfortable to everyone so I don't have to walk
Back forth behind people, you guys know how annoying it is right? ".
Sandy "I just think the Sam's suggestion is the most practical!". 
Me: "also in the end it really doesn't matter who is next to you because everyone is focused to gaming and we are talking in discord anyway"
Sandy: "just suggest that they will give you a other hallway seat"
Me: "I did that already, but usually hallway seats are for people who work there or needs them, and I aren't only one who needs hallwayseat"
Sandy: " YOU could have said earlier about this!"
Me: "hey Sandy, calm down. Don't snort peas to your nose about this please."
Sam: "our row is already over booked, and you aren't in it xD. But you work there you can just go and edit the seating plan"
Me: "but, I just can't go and edit the plan. I don't have right to do so"
Thomas (he is by stander in this): "everyone is anyway in close to each other in tiny space so it doesn't matter who is sitting next to you"
Sandy: "I don't care"
Sam: "funny how you bring this up now, disco. You didn't say anything for my seating plan. I used my time to think about it, so we are gonna go with that xD" 
Me: "I thought you guys know that I work there. Like in past 5 times I have" 

At this moment I am getting pretty pissed about my friends passive-aggressive words, I know I could have bring this up earlier but my assuming got best of me.

Me: "Also you said" Someone" in the post so I thought it didn't automatically mean Sandy"
Sam: "Well, We did kinda mean Sandy with"
Me: "Also I wasn't only one who didn't say anything" 
Sam: "You should have better luck next time XD" 
Me: "Do you know what, if you don't even want to sit in same row or even do this one tiny favor. I ask the head supervisor so move me elsewhere."
Me: "also how about you get married with your retarded plan if you love it so much. I am done. Goodbye. "

And I left the message group. My last message was childish and rude, I know that. Reason I left the group was because I got panic attack (anxiety is a bitch) and I can say very bad things and escalate things to worse. 

Thomas called me later and calmed me down. And explained his point of view of situation. He told me Sandy and Sam had total meltdown in group after I left and said how I am ungrateful of all of Sam work she put for our friend group and I should apologize of my actions.

I can apologize of my last rude comments, but I just wanted that everyone is comfortable in the Lan-party. I just don't understand why everyone instantly started being so aggressive towards me and I should apologize being ungrateful? Even tho I said you guys can sit how ever you like but I kinda need the fucking hallway seat because of work. I wouldn't ask it otherwise.

 Am I really the biggest asshole here? 