Cards to show you have UC and need toilet access?

I guess it's a cultural thing, even here most shops would allow it if you ask....

However, about your "dashing to the toilet" still isn't normal...do you use suppositories for proctitis?

That's usually a sign of very very very end inflammation that suppositories (or retention enemas if you haven't tried those) do the trick on. If you have used the enemas, then try the suppositories, that should help. You can have inflammation without blood.