2-3 Day Backpacking trip in Yosemite Cathedral Lakes (3 days): 15 reserved permits, 10 day before Sunrise Lakes (2 days): 9 reserved permits, 6 day before Halfdome permit is an add-on requested when obtaining permit Status of reserved permits: http://www.nps.gov/yose/planyourvisit/upload/fulltrailheads.pdf To obtain day-before permits, need to be at the ranger station ~5-6am