Leaving for a few days away on Sunday for my birthday with DH. We have DSC over the weekend, once they get dropped off to their mums we leave. DH doesn't want to mention the fact that we are going away, so as not to upset them. We are having a get together on Saturday with friends, with the DSC and DH has asked that I don't tell anyone we are going away, in case DSC overhear. (Some already know as I work with them and they know I've booked leave) I appreciate what DH is saying and by no means would I rub their nose in it. But is he being a bit unreasonable to ask me to hide it for fear of upsetting them - surely at 11 they can appreciate that adults get time alone too 
(I am partner of 10 years married 4)