Event Marketing is VERY stressful! You need to know everything that is happening, ensure it all happens, and happens smoothly. That might sound like an over-simplified sentence but at the end of the day this career path is not for the weak-hearted. You also have to be very good at juggling many things all at once and be able to keep your composure through it all.
In the end, if you're passionate about what you're doing it's always worth it, but you'll need to answer that one for yourself. If you don't love what you're doing, don't do it.