Inipi
Sweat Lodge
Not drugs, alcohol, or women on their time. Bring a meal to share (potluck) also some stones and or wood would be an appropriate thing to do.
Making some tobacco ties is a great way to enter a lodge. It is a great thing and much better than if you brought none, try it sometime.
Emptier the stomach upon entering a lodge is better than a full meal just before.
Pay attention to who ever is pouring as their may be a specific reason this particular lodge is going on and you can pray for what's needed.
Be mindful not to repeat the prayers others have already offered, and pray for things that are relevant. The insects, and four legged's are just fine, but you and others you know need prayers much more so than they do. But then I could be wrong...