The *7:30-8:30 Tour consisted of 20 people + a brilliant Guide. As the Sun was setting, we could easily see inside every bulb as well as the types of materials used to make each sign.
We were able to take great photos of the lighted signs & some that were unlit even showed up. I recommend the *Sunset Tour. My photos are posted here.
Our Guide was a walking encyclopedia detailing minute details about every sign. Impossible to absorb it all, but he impressed upon us the significance & widespread sentimentality behind these creations as old as the 1930s.
The only disappointment was that only a handful were in working order. He encouraged us to come back in 1 year, as a few more are expected to be restored. Restoration is an extremely tedious & expensive process.
TIP:: I also rode the High Roller @ *Sunset & take photos / videos of the city in daylight, & then all lit up. They turned out awesome.
*Both tours are much cooler @ *Sunset than they would be during the day. As the TA Forum suggested, I started checking online weeks before, the tickets were released about 30 days prior.