All these tips on how to pack lightly... but everyone's talking about mix and match clothes and don't bring too many shoes? Clothes are not my problem in the slightest. I can fit my entire clothing for a 10 day stay into my carryon, no issue. Summer tops are so tiny.
My problem with overpacking is all that OTHER stuff. I've gotten better over the years, but I still bring two pieces of luggage that typically weigh 40 - 45 lbs each. Of course, a lot of it doesn't need to come home with me again so my luggage gets a lot lighter for the return trip. I know I can buy extra batteries and sunblock and coffee at Disney -- but I don't want to pay the absolutely outrageous prices I know I'll get charged because I'm trapped in WDW and can't run down to the local Wal-Mart. I can't rent a car so if I need something while I'm there, and I didn't bring it, I have to pay whatever Disney charges. I have to budget all year to be able to GO to Disney, period... I can't afford to pay twice the usual price for a package of AA batteries because my camera died halfway through the trip.
Ditto for OTC medication and other medical supplies. I bring loads of blister band-aids, roll of gauze, 2oz travel bottle peroxide. Small sewing kit with a few hand needles, clear thread, some extra buttons and hooks. Mini hot glue gun, clear tape, scissors, Swiss Army knife that has a corkscrew and screwdriver. Then there's the food: I think this year I have at least 10 pounds combined of Jolly Ranchers, beef jerky, ground coffee and sugar\creamer packets, and Entenmann's single-wrapped cheese danishes.
Again, sure, I could buy all this stuff at Disney, or other similar stuff. But why should I? If I feel like munching on a snack and open a packet of beef jerky or a lollipop instead of paying $4 for a box of popcorn or pretzel, and I do this just five times during my whole trip (10 days), that's $20 I would have paid. Added to all the quick breakfasts I didn't pay $10 for on my way through the Pop food court to catch a bus, and the batteries I didn't pay $8 for when the headlight on my
scooter died out, and the $5 I didn't pay for a tiny packet of Aleve or Tylenol, so on and so forth. All those small purchases add up when you're stuck on Disney property without a car for 10 days. And Southwest allows me to bring two pieces of luggage up to 50 pounds each. So heck yeah, I'm going to pack them as full as I possibly can with things that I "don't need" to bring.
I'm an overpacker and proud of it, LOL.