When I was four, my parents took my sister and me to Walt Disney World’s Fort Wilderness Camp. Chip and Dale and Winnie the Pooh showed up at our evening campfire. My sister and I played at the beach in matching Minnie Mouse swimsuits. We spent days wandering around the Magic Kingdom. A classic family vacation if there ever was one.             What do I remember best about that trip? Getting my own can of grape soda in a hotel lobby.             The memory is vivid: sitting in a sun-lit room surrounded by green plants and soft music (the Polynesian Resort, perhaps?) clutching my VERY…