MB and W have a cool park by their apartment downtown where we met up for our play date. It is a huge, open green space with lots of other nice dogs/owners. MB brought 2 tennis balls for the fuzzy guys (W called as she was trying to throw them.)
Remi didn't really get what was going on at first, so Max chased after the tennis balls and Remi chased after Max....it worked. We kept Remi on his leash because he hasn't grasped "come" yet, and so we weren't comfortable letting him run free.