Which music festival would you have attended on this date in 1969?  That is assuming that you aren't still worn out from Woodstock earlier in the month.  My choice would be New Orleans.

1969 3-day 2nd Annual Sky River Rock Festival opens in Tenino Washington - 25,000 attend; performers include: James Cotton; Country Joe and the Fish; Flying Burrito Brothers; Dan Hicks and His Hot Licks; Mississippi Fred McDowelll; Steve Miller Band; and Sons of Champlin

1969 3-day New Orleans Pop Festival opens - 25,000 attend; performers include: Spiral Staircase;. Rex; The Byrds; Janis Joplin: Grateful Dead; Chicago; Dr. John; and Santana