There are a few things in CoS that care about alignment, but it’s really not that much. The one thing I can remember off the top of my head is like... a cool idea, but there’s basically no way for the players to actually find it.We charged the sunblade up to max and then rested in the crypts, all the while laughing that this should not be possible. But it did. Somehow. Did the DM misread how the sunblade worked?
Also, the DM emphasized how important our alignment was going to be during session 0. That it would influence things we could and could not do. But I don't think our alignment ever came up during the course of play. Is this something else that fell through the cracks?