Grandparents have offered to keep our not-yet-two daughter for ten days. She's never had a night away from us

My parents have offered to take our daughter to their place for ten days next month. My partner teaches and has half-yearly exams and corrections then, and I have a release in the same fortnight, so on paper it is a kind offer at exactly the right time. She is not yet two and has never spent a night away from both of us. She knows my parents well from their visits, but their house, their routine and their street would all be new to her. Part of me thinks she will be completely fine and I will be the one who isn't. Part of me thinks ten days is a long time at this age. Did anyone do this with a toddler? Did you go along for the first day or two, and how was she when she came back?