We're going to bubble with my brother for Christmas and staying with him for 2 nights. We'll be bringing our then 4 week old with us. We have a baby jogger with a carrycot that says it can be used for occasional overnight sleep but she's not slept in it for more than a nap before. Do we take the risk that she'll sleep all night in it or get a travel cot just in case? I'm really aware that if she doesn't sleep in it no shops will be open to buy an alternative. What does everyone else do for occasional overnights with a newborn?