After I drop my car at JFK Enterprise can I walk to the AirTran... and if not, how often does the Enterprise Shuttle run? I am trying to determine how long it takes to get from Enterprise to Terminal 1 Thank you.

Honestly I used Uber to go to my terminal. It costed me 16 dollars only. Which is cheap price for walking with bags and kids. You van also use their shuttle

The shuttle to the Airtrain is quick and you usually don't have to wait long for it.

Unless its after 12am then you need to park next door in National and walk to the air train

Takes no time" shuttle bus to the air train about 20min and less