It's interesting that a PP thinks of Quakers as strict, because I think of them as tolerant to the point of being barely a formalised religion at all!
There is a belief in Quakerism that you should live by your values not just pay lip service and so individual Quakers may well be vegetarian, or teetotal, or active in charities and social movements but none of that is prescribed or expected. But I wouldn't say that Quakerism requires that sort of active faith, more that it appeals to that sort of person.
There is no creed to repeat or priest to lead the worship, and since they don't have hymns or spoken prayers there is literally never any time where your worship has to involve repeating words someone else wrote. The capacity of everyone to have of a direct and personal relationship with God* without intermediaries is the core of Quakerism.
(* the meaning of "God" is not necessarily fixed to the Christian God - again, it's personal)
Of course a Friend may chose to read something aloud in Meeting, but it would be their choice to do so not a prescribed ministry, and whether what they say resonates with you or just passes over you is equally valid. In a Meeting, the only "leader" type thing that happens is when an elder or clerk shakes hands with their neighbour to indicate the meeting is over.
That said, all the above is just my view as a person involved in Quakerism 30+ years ago. Because the other thing about having no creed is every Quaker will have a slightly different idea about Quakerism, and they are all right :)
And also it's UK Quakerism. Out in the wider world there are Quaker groups where pretty much every single thing I've said does not apply!