My longest leg was just shy of 6 hrs....go to 30k, with rvsm, it's got bladder busting legs (older non next generation anyways, newer burn a bit MORE fuel). Been out of planesense for years, but spent 5 years there, about 3000 hours, but know things have changed over the years.
Be ready to work and fly....think I did maybe 5-8 legs some summer days, doing my own flight planing.
If it suits your personality, it's not a bad job, but if you overnight at an airport with a 3000 strip, and no lav service, you or the copilot will be doing it, maybe even midday on a hot day (it's a bucket style lav, so splashes when NEARLY full, and passangers don't like too see floater).
Yup... tossing bags, cleaning lavs, vacuum the floor (on EMPTY legs to allow quick turns), unless something has changed, you do what it takes.