What type of luggage do you think is easiest for a 3 week summer road trip with 7 different accommodation stops. 1 international flight and 1 domestic flight. 1 hire car. 2 adults, 2 kids. Happy to pack light as we are moving around so want minimum stress/ease of loading car etc. Are suitcases or holdalls easier? Definitely not backpacks as I like to be able to open a bag and see what is there without having to root around. What has worked best for your family?