That is a really great idea about asking what people's access needs are-- I too would have difficulty naming mine, and I've been disabled for years now. They would be something like: low lighting if available, a comfortable place to sit, and water to drink. At work and in other places, I'm afraid to ask for accommodations. There are a metric tonne of barriers for asking for these. Universal design is one way to lower such barriers.

I just-- I'm really appalled at the idea of not paying interpreters. I know that a lot of conventions are run by volunteers, etc, but this is different because it is about the charity (ie pity) model of disability rather than the social justice model of disability. It is better to have no interpreters at all, IMO, than to have unpaid ones, because this just reinforces a very old idea of PWD getting the crumbs from the table, and people who serve PWD doing noble self-sacrificing charity work, rather than regular old paid work.