I know when we travel to Mexico we can do the online check in a get boarding passes for the trip back (did it once) but the process in Mexico is you still have to wait in a long line and get the boarding pass from the counter clerk.
We are flying Delta to and from Jamaica does anyone know if checking in online for the return flight and printing the boarding passes is worth the effort or a viable option to speed up the airport process at MBJ.

I know it isn't worth the effort in Mexico CUN airport.