Currently on holidays with DH and DS5, who will turn 6 soon. It’s a family holiday - I’m not from the UK but live there, and usually travel to my hometown 2/3 times a year. So, lots of people to see, loads of things to do, not enough time. Our days are packed, we meet loads of people and go everywhere either walking or by public transport (very busy city so not worth hiring a car). Today my DS looked particularly tired; I checked my phone and it seems that we walked 9k. And when he wasn’t walking he was in the beach or in the playground. Is this too much for his age? My DH thinks that it’s probably good for him, but I worry we are overdoing it...