I'm currently stuck at home with an injured foot and Ireland's a bit of a long way away, so I won't be able to come along to anything. But good luck with everything. You're certainly putting the work in.
I would ask one question. You're writing much darker stuff than me, from the sounds of it. One of the advantages I've had at signings is that I can effectively say "Aw, come on, it's a laugh!", which works surprisingly well. Is it harder to sell books "cold" to people when the subject matter is more serious?
You're excused (this time -and I hope the foot gets better
I think, in this era of grimdark, it's not too hard a sell. Also, in terms of darkness - it's there for story reasons and that's partly to invert some of the trope, and people are open to that (or they were today).
But there's loads that's escapist in mine, too - space pursuits and some humour, so I made sure I mentioned that, too.
But with an opening line of "like a grimdark Space Opera" people who were interested stopped, those who wanted something lighter wandered on with a smile and a thanks.