All use, or can use, mag stripe server cards to allow for server settled bills, or can be set up for hostess settled bills. All have highly detailed reporting systems, as well as come with a variety of slip printer options. And despite what any vendor might tell you, thermal printers are not a good idea for kitchen bills. My final suggestion is to do 2 things. First, if you're going to do it, spend the money to do it right.
Nothing is more aggravating than a cheap system that is poorly designed for restaurants.
There are hundreds of PC vendors selling shit and telling you it's the greatest thing on the market. Second, stick with a company that sells it's systems to restaurants almost exclusively, preferably a recognized company like the above, or companies like Remanco. Your piece was put together wonderfully, unfortunately I do not agree with your potion on no smoking at the bar. As a smoker I will go out and smoke a butt while having dinner even though I spent several dollars on a meal. To me that is the cost of my habit.