It will have been a good experience for them, but also for me. It has been a good experience to have had them here.
I love to speak to foreigners, so that they can let me know how things are outside. It is a cheap and risk-less way to 'travel'. I presume I like foreigners (most of them).
Now, I hope they have a good trip back and seeing them soon.
Maybe someday I will be a foreigner.