If you want to do something a bit special then how about linguine with crab and chilli (just leave the chilli out of the children's part).
Ahead of time (day before as it keeps in the fridge overnight) mix two tins of white crab meat, with 3 tablespoons ground nut oil (or veg oil will do) juice of a lime, 1 large chopped red chilli (or a teaspoon of chilli flakes) and a large handful of chopped coriander. Stir together and leave until you need it.
10mins before serving, cook the pasta, then drain and stir through the crab sauce - you don't heat it before doing so, it goes in cold.
Serve with lots of crusty bread.
Or if you fancy something simpler, how about a big pot of chilli or curry, served with lots of accompaniements - guacamole, sour cream and salsa, with lots of nachos for dipping for the chilli, or chutneys, cucumber or mint riatha, with pompadoms with the curry.
Both curry and chilli can be made the day before and kept overnight (in fact they improve with keeping) so just heat them up while you cook the rice, once your family have arrived.