Sales, Guest and Tips Up selling procedures is a way of improving your sales behind the bar. It is ways of making a guest buy more by using your knowledge to suggest to them a premium spirit or suggesting buying a bottle. Your guests are more important part of a bar. Without them you would not get paid or ecen have a job, so it is very important to keep them happy. You will learn how to treat certain guests. For example you wouldn't treat/act the same for a group of girls/guys than you would a couple. Tips. The biggest question on everyone lips is "How can I make morr tips"? There is a very easy answer to this. Imagine you were on the other side of the bar. What would you expect the bartender to do for you to leave him /her a tip? A bell is a very useful tool to have on the bar. Every time you receive a tip you ring the bell. This will make your guests wondee why you have a bell and what are you ringing it for. You explain that it is for tips