Our son is 5 years old and autistic. He is quite high needs. He has behaviour issues and a language delay. He still won't sleep on his own and will wake up shouting for you in the night if you are not there. To get to sleep you have to lay next to him. We also have a 3 month old. So bedtime is a 2 man job really as one needs to sleep in room with our son and the other in another room with the baby in the cot. If you needed to bring the baby to feed or comfort to the bedroom with our son he would most likely have a meltdown.
Mil has a 65th birthday coming up and has invited family to a restaurant. They are expecting dh to go and there will be emotional blackmail or a tantrum from dhs family if he doesn't. Its 60 miles away and it starts at 6pm. That means technically our son is not invited as his bedtime is 7.30pm as there is no way they could travel there and have food and be back anywhere close to his bedtime. It also means technically I am not invited as I would need to look after both dc.
AIBU to be annoyed my son and myself are excluded and to think if you expect your adult children to go to a restaurant for a meal for your birthday you make it lunchtime to fit around childcare needs especially when it's a special needs child. This was the same for father in laws 75th birthday a year ago, where our son was technically excluded because it was past his bedtime and I stayed home to look after our son.
Also Ds would behave in a restaurant if it was before his bedtime as he behaviour outside has massively improved in the last 2 years. Mil has never been that interested in ds and has only started interacting with him more when she sees him since his behaviour has improved.