What to take
It's the eternal travel question. Especially for families, knowing what to take and what you can live without can be very difficult. Obviously there can be no definitive answer with different sized families, going to a range of climates, for differing lengths of time. The best, single piece of advice we can offer is make a list of everything you think you’ll need – make all the family do their own – and beside each item write the reason for including it. Then work at reducing the list, removing the least essential items first, until you reach an ideal weight.
Here's a link to a very useful universal packing list generator that you can customise to your travel experience.