This was a wonderful tour. If you're wondering if the tour really starts at 4am (for us at least, for the season), it does! I've done a couple other tours involving visits to religious sites, and this was by far the best one. Informative, the information was laid out in a way that mostly made sense, and left me with a enough knowledge to feel confident about visiting a Sikh temple by myself in the future and not be totally lost.
The tour lasted 2 hours, and had plenty of time for photos built in. The temple wasn't nearly as busy as it looks during the day/evening.
Ultimately, it was an early morning, but definitely worth avoiding the crowds. Perfect timing to get breakfast and go take a nap.