Cheating: 

Please consult the SICKON Mayapur Yellow pages, obtainable from Daru Brahman prabhu: [email protected]
Ask local devotees about price-levels. 
Never pay in advance. 
Check references of any service persons (yellow pages).

Traffic: 

Margins are very small in India. Be very careful!

Ganges: 

Drownings occur almost every Gaura Purnima time. Be careful! 

Weather:  

Cyclones and tropical storms are common, particularly off the east coast. You should monitor the progress of approaching storms.
 
Drugs: 

Control whom your teenage children associate with. 
Do not carry unknown items on international travel.

Dogs: 

As dhamvasis they deserve respect... 

...but they also spread disease and have sharp teeth. 
Do not feed them inside ISKCON camp.