I already mentioned that I had the most uncomfortable viewing experience for Weathering with You but I possibly had the most “authentic” viewing experience for Lelouch of the Re;surrection. I say “authentic” because it was sort of the worst seats in the house but there were be no set up that could be envisioned as more Code Geass that I could think of. First of all the music in the room was just a tad too loud. They raised the volume to counteract a potentially noisy crowd but it mostly only made the crowd louder to compensate. To the right of me was a vaping CC who pretty much smoked her little device the whole movie. Behind me were a row of rowdy fujoshi. They had seen the movie before (a fact they mentioned several times) so they mostly just shouted various comments at the screen with an emphasis on anything hot or to do with their fan fiction. It was not full MST3K but it was a fairly wordy unwanted commentary track.
Overall I still experienced the movie fairly well it just was probably the best encapsulation of the Code Geass fandom in a single solitary moment. If anything I probably would have enjoyed a little more had they not been there but such is sometimes the price of going to a live screening.
By the way, there are going to be some MAJOR spoilers for the Code Geass and the compilation movies but truth be told you should not have anything to do with this movie if you have not seen those.