We recently took my partner's 13 and 16 year old DSs on holiday. It was mostly fine but we had a lot of trouble getting them up and out of the hotel in time to do anything before midday. On the last morning we planned a local boat trip starting at 11, which meant leaving the hotel at 10.30. Despite multiple calls to their room, including a 15-minute warning at 10.15, they didn't show up on time. We waited a couple of minutes and left without them, returning around 2pm to massive sulks and resentment. Apparently they were only five minutes late but didn't think to follow us even though they knew where we were going. They had money and bought pizzas for lunch, and I am sure had fun in and around the hotel. But now, a couple of weeks later, we're still being punished for 'abandoning' them for hours on what was 'supposed to be a family holiday'! I think this is unreasonable but what do others think? How should we deal with the resentment?