Hi Marco, I think there is a little misunderstanding. 1. The kitchen does have an oven. It's not only a microwave, but also an oven and grill in one which you can select with the buttons. 2. Some of my own groceries were deep-frozen, so you can use them up to 3 months after the expiration date. The groceries were not from other customers. I always buy fresh fruit, juices, cookies, coffee, wine, beers and chips to welcome new visitors!