They wouldn't be able to function otherwise - you can't very well order an ejected pilot to "hold it in" until SAR arrives .
I dunno - not sure about large bombers, but the Catalina flying boats did have a toilet. So, it's possible the Broadsword does too.Probably not; I'm sure the pilots used a sealed bag similar to the ones used today. I don't think that particular technology would have to change to much; there's not much point in reinventing the book, if you know what I mean
As Q mentioned a while back, while it's easy to laugh at this sort of thing, it's not so easy when you're stuck out in space when you really need to go right now this very instant!(though I'm not sure if that isn't some kind of premature April Fool's thing)