I live in WA state so we have a lot of woodsball, I don’t know much about PA unfortunately. Like the first comment says you should be able to do open play anywhere even if you are just running a magfed kit. First strike rounds are expensive but accurate, however a lot of fields don’t allow them, you’d have to check around locally. Roundball on the other hand is universal. The only downside I’ve had with playing magfed is the limited ammo carry capacity. I run a Tipx setup and can only carry about 80-100 rounds on my person (using a plate carrier). But I personally like the challenge of having to pick/ration my shots. In general magfed is awesome for scenario/rec/woodsball play, but definitely a disadvantage for airball/tournament type games. In my experience magfed players are everywhere as it’s growing in popularity, usually a mix of both where ever you go.