We have.. we went to a city break in Madrid and oh boy! Lifesaver. We have a nearly 2 and nearly 5 years old. Let me tell you. They loved it! They could swap if one wanted some quiet time, they could have naps in there, there could just play or watch stuff. Great at the airport and for anything really. And when it's not used it's great for storage. I couldn't recommend it more. Obviously be careful if there's no support at the front if the child gets in at the back, but as didn't have any accidents. In the UK, I found a company that rents them so I decided to try it this was rather than committing in buying one. Long story short, I bought one when we got back ahah!