Hi all. I am Yorkshire, Raspberry. Although I suspect that there isn't a separate room to hold a creche in, but am loving the entertainer idea. I was put off by cost initially but have looked into it and balloon modelling and that isn't too bad for a few hours. Outside space limited too, but a bouncy castle would have been ace!
Party bags with small quiet crafts in and hoping for good weather, I think. Perhaps disposable cameras and some sort of hunt/mission for the older ones.
For the amount of children you are having I would definitely look into hiring an entertainer or bouncy castle and face painter/balloon modeller. We are having 5 children (2 of which are our own) ranging from 2-8 years old. I have got little colouring books and crayons and some small packets of lego for the bigger boys, duplo for the 2yo. Hopefully the speeches etc won't go on too long so they shouldn't be too bored. Like the idea of chalkboards!
I'd hire someone too - I went to a fab wedding last year where they had a jester who did circus skills outside with the kids during the speeches and balloon modelling between food courses. The kids had a fabulous time and really enjoyed being with him - and the adults didn't have to worry either
We had a bouncy castle and a old fashioned ice-cream trike with unlimited ice-cream there was also a tennis court where the kids brought their own bikes/scooters and some garden games and chalk boards for them to scribble/play noughts & crosses on