Thanks for the suggestions.
We're travelling with 2 people who like to be in bed by 9pm, prefer a nap in the middle of the day and don't like to walk too far.
I love the idea of a dusk cruise. Yasin is into castles so we might also visit Sacre Coeur. I would love to visit the Louvre and the Eifell tower too but I hate rushing around a city so we're going to have to prioritise and just see how far we get.
Yasin loves cheese, I sometimes think I should have called him Anatole, so he'll be right at home eating stinky cheese lol. Yesterday I went out to hang out some washing and came in to find him eating a wedge of brie the same way most people eat a wedge of watermelon.