Mine are 13, 11 and 6. The eldest has Autism and youngest social communiction difficulties (we feel ASD). We find that involving the children as much as possible in what we're doing, why, and having a sort of timetable helps them to be more comfortable with whats going on. For my DC they get frustrated and challenging when they feel out of control and unsure of whats going on.
We ensure we schedule plenty of drink breaks and food/ snack breaks. A lot of whingy behaviour in our house can be due to not being fed and watered.
We've just had a few days in Berlin.This is an example of typical day out. We caught the train from airport to hotel, checked bags in, went for lunch walked along to the telecom tower then Brandenburg gate, had a drink/ snack in the park back to hotel to access rooms for a few downtime hours then out for tea.
DS1 had train and underground timetables and helped plan the trip from the airport, DS2 had leaflets for us all on the tower (to busy and costly for us to go up but we looked and took photos), DD at 6 helped pack the snacks and drinks and helped share them out in the park.
They all had maps for the walk and didn't spend too much time moaning so long as we stuck to the plan.
We have to plan becuse of the childrens specific needs but I do think that a lot of children, taken out of normal routine, quite enjoy an element of control in whats going on. Maybe, not down to the details of what flavour juice we're going to have at specific timed snack time that my family have, but to have solid points of refference in any new experience. So for my little break....we're going to Berlin, we're going to travel to hotel, check bags, eat lunch, explore for a few hours then rest for a few hours. There will be wifi but we'd like to show you some of the sights before a bit of tech time.
If you then get moans and groans you can reffer them back to the solid you are going to get down (safe/ familiar) time ..... right now this is our plan.
I also think that emotionally a child whinge is quickly forgotten, by the child. We can carry its emotion for far longer. Its a bit like the mummy bashing when they cry at the nursery door and you feel a bit sad all day. They've litterally forgoten 10 seconds later and are busy playing with all the lovely toys and other children.
If you're a bit exhausted yourself, do you think you're over pressurising yourself for everything to be perfect when really children having a bit of a whinge every so often isn't that unusual?