We're all converts to packing light here on this site. But before the conversion, did you terribly over-pack?
Here's my tale. At age 24, my friend and I went to Scotland. Since we were staying with her relatives, we felt we could pack a lot. We each had one large and one medium suitcase. A purse. A large camera bag with film and lenses. And...a good size duffel bag that just held our shoes. I think we took about every outfit we owned, but really only wore 2-3 pairs of jeans and 3-4 sweaters. And the high heels only came out once; that was enough!
We were traveling with her aunt, returning after several months in the states, and her father, going for a 2 month stay in Scotland. They had way more than we did. Assorted bags and boxes, suitcases, souvenirs. For the four of us, we had a grand total of 19 pieces of checked luggage!! It had to be loaded on its own luggage cart and I accompanied it all to the plane. Can anyone top THAT?