Disclaimer- all are my own thoughts, or some thoughts I have shared with my friends that also work/ed at the park
I have worked in entertainment, some time in sponsorships(AKA cooperate alliance) and safari. Started in entertainment while working for fright fest. FF is fun but gets exhausting, after a few years of doing it though, i have lost some interest in it, but still do it. After that fall of 2011, i decided to continue working for entreatment the next coming season for an all summer job. I was hired in as a 'greeter' which basically worked at show venues helping guest,seating them, controlling crowds during shows,watching for animal(if an animal venue) and their safety during shows, and cleaning the venues.
That kind of job is easy at times, but also hard at times. When you have to tell guest 'no' or that they can't do something, some are OK with things and understanding, some fight back and makes your job that much harder. That also applies elsewhere too, a guest can either make your day, or at times break your day.
Although i was hired in as a greeter, i was still thrown all over the place where needed to character escort and concerts as well.
Along with that I have helped sponsorhips for a few years during the summer when i could for extra $ and hours since it paid pretty well. These jobs were easy as most of the time were just handing out samples to promote a product.
Safar is kind of the same as ENT, with easy at times, hard at others. Talk a lot and work long hours(on a busy/normal summer day...it could be a 10 hour work day on avg.)
In summary, it is a good place to work. You make great friends. My friends and I have said multiple times we would like to find other jobs, but its hard to since you had a fun time working with all your friends and don't want to leave them if they are all planning on returning. Another reason why it is hard to leave the job is because as long as you don't do something to get no 'rehire status', the job is always there for you year after year and are basically guaranteed that job if you get there on time. On average pay is not too high in any department, hours can vary drastically from my experience, and days can be short-with just a few hours, or long- have worked 14+ at times.
But like Matt said, it is what you make of it,even if a bad situation occurs, if you can look at the good side, or make a joke out of it, you'll be fun. I know people who've worked there and hated it, and people who have worked there multiple years who love it, and theres some people with a love/hate relationship.
I would say just consider the pay of the camp job, and SF job,hours etc and weigh all your options.