Ok, so tonight's progress was finishing up the wiring racks which house the valves, check valves, air pumps, and the tubing that will serve the drink.

That leaves:

1. running the tubes to from the valve to the drink.
2. Mount the Co2 manifolds.
3. Mount the additional Co2 regulator.
4. Run Co2 lines from manifolds to drinks.
5. Create faucet for drinks (1 inch for 12 tubes, thinking maybe 2 1/2" or 3/4" that merge into a 1")
6. Mount Relay boards
7. Mount a power strip
8. Slightly tweak the current power layout scheme to fit 6 on each side.
9. Run eletrical wiring
10. Test wiring layout
11. Do a wet run test
12. Deconstruct it
13. Ship to Maker's Faire

2 fully mounted racks, pumps and valves

Locked and stocked

Tubes run for the valves, wires and entry tubes are only what is left

Looking better than what I thought.