In the summer, DH step brother is getting married and we are invited (me, DH and our 2 kids). They live over 400 miles away which takes us a good 8 hours to get to (more if bad traffic which is quite likely at that time of year).
When we go back to visit -yearly -we usually make it part of a several day visit to see DH parents (not the stepbrother as he lives elsewhere), but the issue is that the wedding isn't taking place during the school holidays. This means we'd have to leave after work/school on Friday, arrive very late, attend the wedding Saturday and then all of Sunday would be spend travelling back in order to be ready for work/school Monday.
I don't really want to go due to the timings, the fact that DS is autistic and needs his downtime at the weekend from school, and want to suggest to DH that if he does want to go he could go alone. For background, he isn't close to stepbrother - there's a 20 year age gap and they didn't grow up together, and we see him at the odd family gathering maybe every 2-3 years.
Is it unreasonable to suggest this? I don't want to be unsupportive but equally feel that the hassle outweighs the benefit of me and the kids going. If he does expressly say he wants us to go with him, I guess I'd go along with it (reluctantly!).