I recall an incident at Costa Coffee Juhu in Mumbai where we had a small Party. The Bill had reached a decent 4 digit amount. We wanted to celebrate the Birthday of one of our friends. Pastries had run out of Stock. We bought a small cake from a nearby shop. The Manager refused to allow us to eat the cake saying that "outside food is not allowed".
We finally had to eat the cake outside. This has never happened to me in any Indian restaurant in my life