For the last two years, step MIL has booked theatre tickets for us and her to attend a Christmas show. For the last two years, my DH has squirmed when he mentioned it to me because his step mum had booked and paid for the tickets without checking we were free - she was taking a real gamble. We’ve accommodated her for the last two years even though it was massively inconvenient because we got home late, at 8pm, still had to rush around and sort dinner and then we were up early next day to travel a couple of hours for a sports competition for our DDs. Eldest DD12 no longer competes, but DD8 does, is very keen but needs her sleep. AIBU to say that no, this year, we’re not attending, as DD wants to focus on her competition and needs to be properly rested? DH thinks that if we’ve managed it for the last couple of years we can do it again this year. I say no, we’ve worked around her twice before to our detriment and I’m putting my foot down this year. Who even books and pays for tickets without checking that we’re free?