Has anyone spent a night in Bombay airport? We will be arriving aroudn midnight from US and will take a 1st flight out to Delhi. The flight is likely to be around 6am. After hearing how long things take to get through immigration, etc, it will leave us with only a couple hours to spend. What are the best options if we will stay at the airport? Are there any arrival lounges? Does the domestic airport have any good places to hang out? We would be ok paying for admission into a lounge, or would consider buying a business class ticket for BOM-DEL if that would allow us to get into a lounge at that time of night. Has anyone done it?

thanks