If you have a fourth grader, they are entitled to a one-year free national park pass which is an $80 value. (“Free” as in pre-paid with your federal taxes whether you use it or now.) Head over to https://everykidoutdoors.gov and fill out a quick form with them. You’ll print off a pass that you can use for free entry not just for the kid but for everyone in the car. There are of course some limits on the number of people it covers, etc but for our family, it will cover pretty much all situations that we’ll encounter. These passes are valid every year from Sept 1 through Aug 31 so now is the time to jump on this if you have a fourth grader in the house or set a reminder on your calendar if you have a younger child.