Weiser River Music Festival 2020 Promo Code The Weiser River Music Festival 2020 Promo Code is "RSVP".  The Promo Code for The Weiser River Music Festival 2020 is "RSVP".  Purchase Discount Tickets for The Weiser River Music Festival 2020 using Promo Code "RSVP".  Check out The Weiser River Music Festival 2020 Lineup HERE.   The Weiser River Music Festival 2020 will be on Thursday June 25th 2020 to Saturday June 27th 2020 at 606 U.S. 95…