AITH my sister got married and my Dad forgot I existed

I will start with the AirBNB situation. My Dad only remembered to ask if I had anything booked because he was prompted by his partner, by this point it would have been too late for me to get somewhere. He happily told people that he forgot about me until his partner had said something.

So the legal part happened the Friday, we had a meal after at a local bar/restaurant and I was opposite my Dad (important later) this was saved for close family/friends.

Day of the wedding, my Dad was nervous about doing the first look for the father of the bride which was fair. He kept telling me he was nervous. The maid of honour didn’t have a shoulder coverup, so I asked if she needed one. It was slightly creased and my Dad made a big deal that his partner offered to iron it. He then made a big deal that he had to take this with him.

So we’re on the boat for the ceremony/party and he ignores me, a friend of the groom asks him who is this and he only responds with this is (blank) and leaves me to explain that I am the brides sister. This was our only interaction on the boat.

Cut to after the wedding pub crawl which I skipped half off and glad I did as the last venue needed warning to set up which I put in motion. We all headed into the marquee.

My Dad grabs a table next to the bride and groom, makes sure all the family plus maid of honour and her husband is there but doesn’t save a place for me so I ended up at the back with friends of friends.

Later on I go to check on him and he tells me to go away as it is an emotional day. No arguments here except it was a big day for all of us.

People noticed and commented that there was a major disconnect.

So cut to the Monday after the wedding (once I recovered from my sunburn) he was telling me all about a palaver which happened on the Friday evening meal. I had to remind him to that I was sat opposite him. He then asked if I was part of the family Facebook messenger chat which he knew I was as I sorted out which days I’d help him move out, plus I was the first one to put a picture/message in the chat.

Am I being dramatic that he forgot I even existed? I am fully aware this was my sisters day however my Dad treated me like a friend of the family. It was embarrassing explaining to people that I was the brides sister and that yes that man who just walked off was our Dad.

TL:DR Dad has two daughters and basically forgot about the youngest the entire weekend due to the oldest getting married. Am I right to be annoyed that he forgot me?