Just don't check any magazines and nothing will be done. By checking the magazines, you agree to the renewal.
The other charge was after that screen and you have to skip that page, think there is a "no thanks" way, but not sure. Am sure there is a way to decline, skip, ignore, or some other means. However, it is worded to seem like you need to click it to confirm your reservation.
I've used reserveamerica often and never have been charged for magazine of Acitve Network charge but can see how someone could click the wrong place and incur the charges.