Wife and I will be taking a 5 day Kerala trip later this year. We will have a single car and driver who will drive us around and destination to destination for those 5 days.

1. How much do I tip the driver for the total trip?
2. We are going to stay overnight at a houseboat in the Backwaters. How much do I tip the attendants at the houseboat?
3. What is the amount of recommended tips for bellboys, housekeeping staff for hotels?
4. What percentage of restaurant bill is a recommended tip amount, given average service and food?

Thank you for the tips