Are the tables lined up short rail to short rail and long rail to wall or the other way around?
The reason I ask is I feel you can put them a little closer together short rail to short rail then long rail to long rail
since the long rail is usually where the non-playing people will be standing. Short-to-short measured from the
outside of the rail 5 feet is enough, long-to-long 7 is fine but 6 would be accaptable too.
5.5 feet to the wall is enough when measured from the cushion, from the outside of the rail
it is plenty (and too much if it costs you the room for extra tables). All these distances are assuming
seating areas will not be in the way.
gr. Dave