My spouse and I planned to visit a concert several months in advance. We checked and my spouse’s parents agreed to take care of our 3 year old kid while we were away. The night before the event, our kid fell ill and was wheezing (salbutamol given). We apologized to parents and said they can let him rest at home to recover while giving plenty of water. Come the day of the event, after we dropped off our kid at their house and we were on the way to event venue, parents suddenly left a voice note and said they decided to bring our kid to the museum. Spouse called them and asked them not to, because kid needed rest. They said my brother-in-law would really love to spend time at a museum with my kid. I immediately went to parents place to pick up my kid while asking spouse to go ahead and enjoy the event. Now spouse is sad that we can’t go together (tickets were $300 each) and parents are unhappy because they feel I’m overreacting. AITAH?