I am not familiar with that dish as I never worked with them.
However, that being said, if it worked with Direct before, then it should work now.
Sounds as if the wires are there, so just plug your receiver on to the same line it used to be plugged in to.
If the receiver is set to swm, you will have to do a repeat satellite set up and just set it for an 18" dish.
When you take it back home, if you plug the power in after connecting everything, it will reset to swm on its own.