I did a majority of my approaching walking near the main university in San Pedro, University of Costa Rica (UCR).
I also did a couple of approaches at Mall San Pedro.
If you’re in downtown San Jose, you’ll want to go into a number of shops and stores as you walk around to find some Costa Rica Ticas.
The girls working the counters are pretty open to chatting, as they don’t get many customers.
Online is a bit played out due to the influx of traveling gringos, but it’s still worth a shot.