Tips are pooled and given out based on seniority and job performance. If you have someone wait on you at lunch or breakfast get their name and mention them on the critiques. Critiques play an important part. We had a wonderful cocktail waitress at the Captains Formal and Past Guest party. She was from a country we were going to visit a few months after the cruise and gave us tips on where to go. My husband hunted her down to give her a personal tip and find out the spelling of her name for the critique. She was really moved and made a copy of the critique to keep for herself. She told us they were very important.