As with many things managed by our federal government, the "
America the Beautiful - National Parks and Federal Recreational Lands Pass" is overly complicated. There are at least seven iterations of the program (Annual, Senior Annual, Senior Lifetime, Access, Military, Fourth Grade and Volunteer). The benefits offered by each of these vary; i.e. a fifty percent discount on camping fees is not applicable to holders of the Annual Pass. However, the Annual Pass allows TWO individuals to sign and receive the allowed benefits while ONLY the actual passholder of the Senior Pass qualifies (My wife once went into town for groceries and was given a hard time when she tried to re-enter the Park because the pass was in my name). To further complicate matters, concessionaire operated facilities may have different rules for fees than the agency to which the property belong and, because of all the variances, it sometimes comes down to an individual's interpretation of the rules.
This website contains the details associated with each of the pass types along with other useful info on our Federal public lands,