Location: Minneapolis/St. Paul, Minnesota - Latitude 45.057 Longitude -93.074
Rewards Points: 2,146
will play sand keep paver stones in place?
Polymeric sand will be adequate for your patio location as long as the polymers last (dependent on exposure). After that is will work like sand, especially because the pavers are not interlocking type, but ordinary units with a wide joint.
Kevin is right about the gap limitation and not problems of the use of the wood fence as barrier and support for stability.