Yeah, weird to me that a Presbyterian church wouldn't have much in the way of defined doctrine or liturgy. The Presby church I occasionally go to at home has more of a broadly evangelical feel, but when I think of Presbyterianism in general, I tend to think of churches that are very committed to certain distinctives. If they're PC(USA), it surprises me that they'd even be allowed to drop "Presbyterian" since it suggests that they're disassociating from the denomination.