Here is my thoughts , if you are a small cafeteria , possibly it will work for you.

But you have a real restaurant and full Bar cash drawer !!! you gotta be kidding me , Don’t waste your time get a real pos system and control your bar , and your bartenders , servers .Don’t just give them a pad and roll around , as it is service is the key part of our business , don’t mess with your business success , get on the servers and make sure they are punching every drink or food , use your cctv system to integrate to your pos system and you wont go wrong .