Short main point
Have named changed. Feeling sad about this but the few people I've spoken too are 50/50 about the event as a single event we can't say we are disappointed as they also wouldn't travel that far just for 2 nights unless they absolutely had too
(overall due to the history they admit I am not being unreasonable to be upset)
In laws were travelling about 4 to 5 hours for family member birthday party which we would have been at so they would have seen us then.
They were staying at the persons house for two nights. Birthday party is cancelled so we said that's a shame but still be lovely to see you and of course can stay with us instead. Response no thanks we will stay at home instead as was only coming up for the birthday party.
History
They visit family member all the time but don't come to visit us despite inviting/offering/asking.
They only really see us (and their grandchild) if we go to events that they are already doing when they are visiting the family member e.g. birthday parties but they spend the whole week with family member/other grandchild. Unless we visit them where they live (which with young child travelling 4 to 5 hours is hard to fit in so we have to take Al and try to do this a few times a year - and really do love seeing them bond with their grandchild and spend quality time with them) or fit in with their plans when they are staying with family member (an hour away and also they drive past us to get to them).
Basically I am ready to shout scream cry why don't you care about spending time with us (grandchild actually) as much as you do the other ones. But a few people are saying this isn't the right event to kick off about as it's reasonable they don't want to travel that far for 2 nights only.