Thunder Valley Casino celebrates month-long 20th anniversary in June The Venue at Thunder Valley Casino & Resort is a new indoors concert and entertainment center opening Feb. Thunder Valley Casino Resort will celebrate the grand opening of its new concert center, The Venue, over the President's Day Weekend in February. Read more Thunder Valley Casino's 'The Venue' opens Feb. The new $100 million indoor showroom is 150,000-square-foot with 4,500 seats. Thunder Valley is celebrating the official grand opening of The Venue over this Presidents' Day Weekend. Read more Thunder Valley Casino opens The Venue tonight! Febru. This year the award recognized Thunder Valley in a newly created category. Thunder Valley Casino Resort has earned an AAA Four Diamond rating every year since 2011. Read more Thunder Valley receives AAA Four Diamond Rating. The special event includes cash giveaways, entertainment, win apparel. Thunder Valley Casino Resort is celebrating its 20th anniversary throughout the entire month of June. Read more Thunder Valley Casino celebrates month-long 20th anniversary in June J. Thunder Valley Casino Resort has received the 2023 Tripadvisor Travelers' Choice for the third year in a row since the award was first introduced. News Headlines Thunder Valley Earns 2023 Tripadvisor Travelers' Choice Award J.