I put the cases in the spare room about a week before we go and gradually add.

If I did it any earlier I would forget what I had put in!

Would love to be ultra organised and have everything packed in advance, but don't have enough clothes and am always washing and ironing down to the last hour for the 5 of us.

It was a lot easier to pack when the kids were young and I packed for them. My now teenage girls are totally disorganised despite nagging and items always appear in the wash the night before that they require!