Golden Rules
1. Remove Shoes: Always, without exception. Socks are usually okay, but bare feet
are preferred in South India.
2. Dress Modestly: Cover shoulders and knees. No tank tops or short shorts.
3. Leather: Some orthodox temples forbid leather items (belts, wallets).
Offerings (Prasad)
If a priest gives you food (Prasad), receive it with your right hand. You can eat it immediately. It is blessed food.
Photography
Always look for signs. The innermost sanctum (where the idol is) often forbids photography. Respect this strictly.