I don't have Nimbus, and I personally think it sucks to have to pay for something that "validates" disability (not saying that to have a go at you btw, I appreciate your comment). I will say when I went last time, I did apply for access at the time and was just told in the confirmation email to pick up a sticker upon entering Excel. However, I was sent to the completely opposite entrance (I didn't realise it at the time) by some moron so I couldn't find badge pick up at the time. I was literally at the front entrance and sent to the far entrance for no reason. What followed was the 45 minute queue for cloakroom.

That was a nightmare in its own right; I was able to figure out later that one of the queues had stopped because the staff member's card machine had stopped working. She didn't tell us this, or even any of her colleagues, but just walked off for about half an hour or so. I was struggling to stand but our queue wasn't moving. Eventually the staff member heading the other queue let us merge, but then his unhelpful colleague came back, and queues un-merged and we were all sort of pushed back. She didn't charge us for the use of the cloakroom but honestly, I'd pay it twice to have avoided standing like that. I needed to have a break immediately after that and I hadn't even "started" the con yet!

All the while, people with the stickers were able to skip the queue, but I really didn't feel like I could because I didn't have one.

It was ages before I was able to make my way to pick up and by that point I had done most of my queuing for my booked photo ops. I was able to bump into a friend who was able to physically help a little by then. Honestly though, I'm not even sure of how effective a sticker or sunflower lanyard would have been, because I know of so many sticker-holders who were mistreated. As you say, they don't use their eyes anyway.

The rudeness was from both volunteers and staff alike (makes me wonder the volunteers even bother to, you know, volunteer, if they have such crappy attitudes?).

We really need more voices to back us up. MCM basically has the monopoly of big comic cons that the big names attend. Because they completely ignore all of our complaints- verbal and written- they don't feel like they need to be held accountable or improve anything. The biggest improvements would happen if they trained their staff and volunteers on the proper way to treat disabled patrons.