beagle, I’d happily keep dough in cool box, as I do cold overnight proves on it anyway so no different really.
If you really wanna keep it easy, half cook the pizza before you go just with sugo, then when you’re away, mozzarella and your choice of toppings, quick blast and done. It’ll still be really good pizza.
We do this when hillwalking, wee yin potters on a beach or in a river until it heats up, pizza after a big hill day is just the best.