@ Analise

I have never heard of a actual restaurant that pools their tips between other servers. So that is a non-issue.

As far as tipping out I am afraid that you can't control that. As much as you might like to. Servers tip-out because others provide service that the server doesn't have time to (cleaning tables/making bar drinks). I wouldn't tip more or less based on restroom cleanliness that is more just good business/the law. The only restaurants I know that servers tip out hostess are ones where the hostess provides a service to the waitstaff other than seating (rolling silverware or taking to-go orders)

@Emma

Interesting point, and I think it does depend a bit on where you are at in the meal. Sometimes, a manager is the one telling the server to get off the clock and we can't clock out if we have open checks. Usually I just pass over the tab to the waiter coming in or wait until the guest is finished... unless of course they have been camping out for a while then I may say something.