Apart from what others have suggested, remember the Health Insurance provided by your institution may not start as early as 20 days before the program start date. If you don't have proper Health Insurance cover for these 3 months, then you are at high risk.
As soon as visa is issued, many folks just start flying around on cloud-9 without being aware of ground realities. Instead of loitering around there, celebrate Diwali here and then go
