First time I’ve ever bothered with an expedition, how often do new ones tend to come out? All in all I gotta say it was a weird experience starting a new save. I hadn’t realized how comfortable I got having all the money and materials I could want stored up. It was surprising how completely I had forgotten what inventory management was like with so few slots! Happy to see that I could get both heads too.
They roughly do about 4 expeditions every year, each running for 1-2 months. Usually at the end of the year, they replay all of the expeditions from that year as redux expeditions, which are much quicker to complete and run for 2 weeks each. It's a way for anyone who missed the original to catch up on the rewards.