The Undertown has lights in the form of LED Keychain Torches blutacked to the ceilings. These provide about 12 continuous hours of illumination. The batteries are replaceable but it may be cheaper to just replace the whole torch when as required. I got them from Amazon for around $0.50 each including shipping in lots of 20.
Whiskey Jacks gets great effects in the main saloon and through the slits of the armored windows windows and doors of the back office.
The Neo-Tiki Hotel.
Neo Tiki Hotel office and guest services.
The Data Trust.
Full table in the dark.