You know rockers and hip-hop folk can beat up hippies but you really don't have to choose.
Sat isn't Earthday but it is the day Nashville has its big Centennial Park event. Its gonna be a wonderful weekend b/c there are so many things to do in addition to Earth Day stuff.
The pedistrian bridge will link East Nashville & Donelson...you can walk across the Cumberland in grand style. You can get you movie groove on at the Nashville Film Fest and you can hang out at your fav record store for Record Store Day, a year ago I would've said my fav was Grimey's but now East Side is represented by a fine addition to the record store tradition, The Groove.