My sister texted me last night with an invitation to watch our dad give his first ever public talk. I don't live particularly near to my family, but I'm not too far from them to make the journey, and I am on good terms with them, having never been baptised and so not disfellowshipped; they don't shun me and likely wouldn't even if I were disfellowshipped, it's not in their character.
I haven't been inside a kingdom hall since 2006, and I would like to keep it that way; I only intend to step inside one again in the event of a family wedding or funeral service. I don't want to be rude to my sister, ignoring the text isn't an option, so I need a diplomatic way of declining her invitation.
I've considered saying that I'm busy, but this leaves things open for her to ask again in the future, and I'd rather she got the message that I'm not interested, without me having to say so in an explicit way.
Any suggestions from those who have been in a similar situation?