Personal interpretation is a key management tool to help visitors discover, value, and enjoy parks. Goals and objectives for personal interpretation should be consistent among staff to ensure that planning and delivery are effective in achieving targeted outcomes. The aim of this study was to assess how the outcome priorities for, and resources used by, front-line interpreters (employees who deliver personal interpretation programs) changed over the course of one season. Staff goals are also influenced by agency goals and agency support. We were interested in how park agency legislation and management goals were aligned with front-line staff goals and how the agency supported (or did not support) staff in achieving those outcomes. Front-line interpreters from Alberta Parks completed in-person questionnaires during May 2018 (time 1), describing their priorities for interpretive outcomes, perceived trends, resources used, opportunities, barriers, and demographics. Following the delivery of personal interpretation in 11 provincial parks across Alberta during the May to September 2018 park visitation season, the same interpreters completed a follow-up survey between October 2018 and January 2019 (time 2) to understand if and why those responses changed. Respondents were asked to rate their priorities for six main outcomes of personal interpretation. The top outcomes at time 1 were visitor enjoyment, connections to place, and learning. At time 2, learning and enjoyment priorities declined; attitudes, behavioral change, connections to place, and positive memories did not change as desired outcomes. When asked which of the six outcomes were most important, respondents indicated connections to place, positive memories, and enjoyment most often (but there were no changes from time 1 to time 2). As for resources used in guiding content and strategic decisions in delivering personal interpretation programs, the importance of park legislation and park finances declined; the importance of the other resources did not change. When asked what organizational factors helped them be successful (or unsuccessful), staff relied overwhelmingly on their immediate team, including their supervisors and fellow interpreters. However, responses from time 2 suggested that respondents felt in need of more training, more time to prepare new and innovative programs, and more support from upper-level managers and their agency. This research can help inform park practitioner efforts to understand how interpretive priorities change over time and what resources are important for interpreters. Park agency managers can use these results to hire, train, and nurture front-line interpreters, with a goal of improving the impact of personal interpretation programs.