It's coming up to our DS's birthday and we decided to take a weekend break at a theme park with me DH and my parents.
DS's birthday is on the Tuesday and we'd be going Saturday day, staying over night and coming back Sunday evening.
The plan was originally meant to include two DSC who are DS's half siblings. Technically said weekend is their mum's weekend although we are all usually very flexible but when DH mentioned the dates she has said they have plans (fair enough).
DH now thinks we should change the whole thing and do it another weekend when DSC can come. I disagree as it's for DS's birthday and, to be honest, I don't think he'd do badly from having something like this where he's the sole focus anyway. There is a bit of an age gap between them so it's probably ideal anyway.
DH thinks DSC would be upset not to come.
AIBU not wanting to postpone our DCs birthday treat to wait for DSC to be able to join us?