Are they using the metal bases for those ceiling globe light fixtures?

That's what they look like. You can buy them separately and fit whatever globe or shade fits your fancy.

The fixture directly over the grill looks like it was cobbled together by screwing in a two-bulb holder adapter and then the two bulbs.

That's another device not rated for outdoor use I believe. It'll get cooked by the sun!!! [Linked Image]

It also looks like they're running the wires through white garden hose!!!

Where was this picture taken? Judging from the wall it looks like somewhere in the south-west or California....