Servers can determine the total amount dispensed per table by looking at the display meter on the table.  In addition, The TableTender System also allows management to track total consumption and run reports using Table Tap LLC's proprietary software which comes standard with the TableTender System.  This software can easily be accessed on the operator's PC.  Depending on the POS provider, Table Tap LLC may also be able to integrate into the establishments normal POS system, for an additional one time fee.

It depends on how many tables as well as the condition of the restaurant

Yes, Table Tap can accommodate as many brands of beer as the establishment wishes to provide access to. 

Then ask your server for your favorite brew and wait... 

Yes, the system can be tailored to an existing establishment. The establishment will need to be prepared to accommodate an installation and it may involve some minor construction costs. 

You can have one tower with multiple taps, serving multiple brands, each tap dispenses one specific type of beer. 

Not exactly. There is actually a limit to the amount of beer dispensed at each table. The Table Tender System will dispense up to 180 ounces per table at which point the tap shuts off and the flow of beer is disabled. A server is then required to return to the table with a key to reinitiate pouring after determining whether or not the party is suited to continue drinking.