OK, here's the situation with no missing info.
DH booked to go to a gig in London this sunday night (probably a few months ago). This involves leaving at 11am on sunday to catch a flight, with an overnight stay in London, returning late on mon night. He claims he asked me ages ago, which he probably did in his usual stealthy way (waits until I'm knackered and busy and drops it into the conversation). £100's spent on flight, hotel etc which would not be recoverable. It's for a cover band who do Grateful Dead stuff, 4 hours of a recreation of some gig the original band did in the 70's. A chance of a lifetime apparently...
I am not relishing the idea of him disappearing tbh and leaving me with 2 children (4 and nearly 2) on Mother's day. I've been ill recently and haven't recovered completely (still very knackered) and this day is important to me. I don't really want a replacement day on a different weekend.
AIBU to feel put out? He's offered not to go, but I know that's not serious offer and only so he can say that he did offer not to go if I get pissed off about it. I think it's selfish and I don't really care if he didn't check the dates. It's not my job to check, it's him that's spending £100's on himself to bugger off for half the weekend.
Come on girls, opinions please!