A question about etiquette ...What to expect for a day of helping people?

You forgot no smoking.
Someone asking you for help is not necessarily a gift that you are giving.

It's just like when somebody walks into your barn, there are certain rules that are followed.
One is you don't go touching the face of every horse you see without having first ask permission.
Another is you don't go feeding them treats or feeding them at all without first asking permission.

If you go to somebody's place and you wind up spending hours helping them you have a right to have an expectation of being treated decently.