One more tip to add - while packing we make a list of what is in each suitcase (we fly to MCO).
We use 2 gallon bags to pack our items and label them (1/3 of suit case 1, 2/3of suit case 1, 3/3 of suit case 1....1/3 of suit case 3, 2/3 of suit case 3, 3/3 of suit case 3.... and the list goes on).
So if a bag is missing, we know which bag and what is missing to report it to the airline.
Our mistake from years ago

- Our DD then age 5 insisted on having her own bag for her socks. They all fit neatly in a 1 gallon bag.
Well the suit case containing her small 1 gallon bag was opened by the TSA security and was lost when they repacked our suitcase.
The airline reimbursed us $20 for her socks - at least it was something.
My DD, then age 5, was so upset. We called our resort fron desk and they suggested in WDW where we could get her some new socks.
A trip to the
Disney store in DTD was just the thing to perk her up.

Not only did she get 7 pairs of new Disney themed socks, she also acquired some new t-shirts too.
She was dressed to the hilt in Disney themed clothes our whole time we were in WDW
By the way - our DD will be celebrating her 16th birthday this year and she does still remember her little shopping spree when she was 5. She has never lost the need to shop for clothes, even if it just a want and not a need
