Private RIP can get front of the line access to each house multiple times, and the tour agenda is set by the lead guest. That's the main difference.
Private also has a different vantage point if you want to watch "rope drop," and better reserved seats at the shows. And gets free valet parking for 1 vehicle. But really the main benefit is the repeat house access. If your group fills the private to 10 guests the price is essentially the same as the public.
Facebook group is just "RIP TOURS." As always, make sure you are comfortable with anyone you give money to online.
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