You can do the mystery island code as long as you have an empty lot, even before getting 10 villagers. You can't invite more than 1 villager per day though, so just put down 1 lot per day. They won't show up on the mystery islands after you've invited 1. And if you put down 2 lots at once, a...
It's not the movies or games downloads that I would worry about, like breaking into networks, downloading encrypted things, spying on network traffic. I have seen so many "Top Secret" seals on files when I was a kid
I was obsessed with finding UFOs, a surprising amount of US files where stashed on computers in other countries, China back in the early 90s omg sooo much