Do you work alone, if so. What do you do about cooking, as. You can't leave them unsupervised to prepare meals. Also what if some want to play inside and some in the garden. How do you get around that.
How do you ensure your activities are stimulating and suitable enough for each age group
Cooking - I prepare in advance, use the slow cooker, put the baby in the high chair with toys to watch me in the kitchen at the big table and have the older ones within earshot and check on them. It can be done. They also like making their own food like wraps, pizzas etc.
Playing - my outdoor area is very safe and risk assessed, gates can only be opened by me. I will allow older ones to play in the garden if I can see them through the window and hear them at all times, I don’t let little ones outside without me. Generally the little ones want to be with the big ones! I can set up a craft table outside while some are playing, or have books on the sofa. Again, it can be done, you just have to be very very aware of any risks and judge the children you have.
Activities - I have a huge box full of tried and tested planned activities, themes, outdoor play ideas and loads more for all ages from EYFS to KS2. I roughly plan a few months - just making notes- and write the activities which will be suitable for the ages in a particular theme. I really enjoy this bit.