Here was my plan: take as little luggage as possible since it was just me, my husband and my 8-year-old daughter, and we’d be changing hotels and national park lodges frequently.
Here’s what happened: two neatly packed, tiny little suitcases left oodles of room for mountains of pillows, random shoes, sweaters and jackets, hiking boots, snacks, water, dolls, toys and stuffed animals. Oops.
http://www.petergreenberg.com/2009/06/05/family-friendly-travel-adventures-in-yosemite-national-park-and-beyond/