I have performed the duties of an interpretive park ranger before. This is a very fun job that takes huge amounts of energy. You educate the public on exciting fun topics and the make known your conservation iaaues affecting the region and in particular the park. The TPWD mission can be fully realized every day while performing this high energy work. It is a "calling." For those who love it and have the public speaking ability and inspiration to be a dynamic teacher all day to a variety of audiences of all ages, this is not a job, it's pure fun.
Only people who consider this demanding and very public job "fun" should seek the position.
There have been periods for a year or two, where I was all about doing this service. It is an enormous opportunity to have a job doing that which inspires happiness, and is part of a worthy nature conservation cause. The right person for this job, stands out like a Bobcat in a bank. They will be the big fluffy, energetic, ceaselessly smiling science living goof ball with a good hearted passion for excess of nature on a daily basis . An unusual position which could be perfect for your temperament one year and a bit much to chew at other times .