Hi we are hoping to go to Italy in June with my 2 year old DD. Well he will be then. My parents have a place out there and will be joining us for part of our holiday. MAd as they are they are driving over but don't particularly want to take the car seat over is there anything we can use instead? As he only is 11 KG at the mo am I right in thinking that booster seats (you know the light little ones) are not ok? Help please. What can we use. Thanks x :0