My dd (soon to be 6) and ds (soon to be 4) want a joint party. We have a great venue - church hall with huge garden and a kitchen. We are having a science show, so garden would be good for releasing a rocket. Trouble is, it's only available on Sundays in March and Earl April. Would it be weird to have a p arty on a Sunday rather thaN a Saturday? Dh thinks it would be...