Likely to be approx 25 4 - 6 yos there.
basic plan is a bouncy castle and an inflatable slide for 1 hour ( indoor ) plus footballs available to kick about.
Then another hour for eating then dancing and traditional games.
Is that enough?
Should I set up a craft table for the 2nd hour for the ones who don't want to run around anymore, or maybe do it in the first hour for the ones who aren't so active?
Also, do you think a big inflatable slide is going to be a hit or would we be better off with organised sports things like races, football etc. I am conscious that there will be 4 los there who have SN and might not be able to manage the slide, so I don't know if they will be bored with just the bouncy castle ( they will be OK on that ).