Only way to get them in advance to my knowledge is be a season ticket holder with a Personal Seat License of the Raiders. They just opened up time slots to the public starting in May. And every Friday before 10am Pacific is when the next slots open up for 5 weeks out. So if you're trying to go Sept 17 for example set your alarm for 10am PT August 13th to snatch up tickets.
I would go about 90min before sunset if possible because then if you get the drink and view tickets you get to watch the sun set on the strip and it start to light up. If you don't get the drink and view seats then you finish in the team shop.
I've heard it's a very good tour that has a special surprise in the locker room that can't be filmed yet no review I've seen tells us what it is lol
This is the view you get near sundown.
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