Montana Fish, Wildlife and Parks is considering a plan to allow campers to make reservations at 21 of the state’s 54 state parks, according to the Associated Press.

State Parks Administrator Chas Van Genderen says campers want the ability to plan ahead knowing they’ll have a camping site when they arrive.

A reservation will cost campers an extra $10 on top of the regular campground fee.

The agency says 25% of the sites at campgrounds that allow reservations will remain on a first-come, first-served basis.

If approved, the reservation program could be in place by 2011.

The agency is accepting public comment on the proposal through May 18.