We go to Jack Carter dog park in central Plano most weekends [http://www.plano.gov/Departments/ParksAndRecreation/Parks/Pages/Dog....] We bring my beloved buddy, my Corgi, Roscoe, and his older brother (not really his brother, not a corgi, a 14-yr old rescue mutt), Gizmo, and my son's two dachsunds. We all have a blast. We've only started going in the last couple months and it's been really good for Roscoe to become more acclimated to being around other dogs he's not familiar with.
It's funny, though, Roscoe likes to be around and meet the new people more than he's interested in the other dogs. And he's so friendly and outgoing, other people are just drawn to him and are really friendly toward him, especially kids.
It's a lot of fun, I'd highly recommend this park.
Ft. Worth Dog Park is awesome - there are benches and tables to be able to sit and visit - wash off areas, watering areas etc. they have two separate fenced in areas one for large breeds and one for the small guys. GREAT PARK