How to choose between different styles: harem, breeches or sailor style?

So I’m prepping for a themed festival next month, and I’ve narrowed down most of my outfit… except for the pants. I didn’t expect choosing between harem, breeches, or sailer style would be this complicated 😅 I want something that fits the vibe but is still comfy for walking and standing around all day. Tried on something breeches-like a while ago and they felt cool but maybe a bit too fitted? Harem pants seem more relaxed, but I don’t want to end up looking like I’m in a yoga class instead of a steampunk fair. Anyone been through this before and found a favorite style that works well in real life, not just in photos?