L.A.
Here's ticket info on the Botanic Gardens. We went last year and it was nice. We brought food, a blanket to lay on and chairs.
http://www.fwbg.org/calendar.cfm#FIKPF
And here's a huge list of show's in the metroplex:
http://www.town-mall.net/community/events-july.html
And, I'm sure if you browse this site, you will find info as well:
http://www.texasmonthly.com/travel/events/fortworth
And the one at Bedford Boy's Ranch was really great when we went several years ago:
http://www.ci.bedford.tx.us/Departments/tourism/fourfest.htm