I’m just the opposite on both things. After I finish eating, I hate having a dirty plate in front me. At home, I take it to the kitchen. When I’m eating out, I want the wait staff to remove it as quick as possible. And I really don’t like to drink room temperature water. As far as I’m concerned, fill that glass full of ice. If the waiter/waitress keeps the refills of coffee or ice tea coming, it will pretty much ensure a good tip.