British Car Day at Redmond Town Center is August 4. Here is the link to the Exotics at Redmond Town Center 'Special Events' page: https://www.exoticsat.com/special-events/
The standard event time is 9am to 11am but you will want to arrive early to get the best parking; these events draw many cars.
See the 'Blog' page for the latest news about the upcoming weekend such as weather go/no go, parking location, entry directions, etc. Check out the 'Rules' for expected conduct and 'Criteria' for vehicle entry criteria; for example, all Loti are allowed.