Trey Anastasio of Phish, Billy Strings and Sturgill Simpson were among the special guests to join the band over three nights of concert and amid a city-wide celebration.

Ever. Why? Because at this point, 60 years after the Grateful Dead made their mark on this psychedelic town, it's no longer about the band personnel as much as it is all about The Vibe.

Some San Francisco residents around Golden Gate Park feel frustrated with traffic woes, loud crowds and limited access to the park in the midst of three straight weekends of concerts.