I completely disagree with Annette and Ron. Yes it is inconvenient, and you could have a nice conversation with the buyers, or their agent (or your agent if you have one) explaining that you really need time and space to get packed, and get the home cleaned. BUT what you want is an excited buyer. And they sound excited, maybe a bit nervous as well, but for sure they are committed, and excited. Don't treat them like you do not want them around, or you may end up loosing them.