3. Specifically mentioning day tickets - that they should exist, and they should be well publicised and not too expensive.
This was suggested by Laurence, elsewhere on LJ.
Again, the relevant existing BiCon guideline is
"BiCon should be made accessible as possible to people
on low incomes by means including a variable price
This could be merged with the proposal for what I've called point 2, something like... "BiCon should be made accessible as possible to people on low incomes and/or with special needs, by means including a variable price scheme/sliding scale, an Equality Fund and day tickets." But again, that doesn't mention publicity. Maybe another addition "[comma] all well publicised" would do the trick.
baratron suggested taking that question into the Disability Forum session partly just because we're already talking about some stuff in a similar area, but also because of the access implications. Someone may know that one day of BiCon is their limit (there's a friend with ME I'm thinking of, of whom this is currently true).
I certainly think that if the day tickets don't get into the main BiCon guidelines, we should add this to the special needs suggestions (if it's not in already - it's been a long day :-) )