I have a Days of the Week song so my dckids always know the day of the week and what I have planned. I guess I already get them excited for the next day at afternoon snack, whether it's going to be a park day or a learning/crafting day so they know exactly what to expect when they arrive in the morning. I don't notice any difference besides their excitement for whatever we're going to be doing on any day.

Other Mummy, if you're having trouble on Fridays can you plan something and let the children know on Thursday afternoon what they can expect in the morning? Maybe if you make them aware they will be calmer?