Israel treats these people however they like. You make it sound easy for the families of the prisoners to travel from Gaza or the west bank to visit their loved ones. Most Palestinians don't even have the documents needed to enter Israel and even if they did, this does not guarantee entrance. Hamas has Shalit and Hamas will set the rules, just as Israel does for their prisoners.
Middle East quartet reportedly set to meet during UN General Assembly (dpa)
from the article: Israelis demonstrate en masse to mark 4 years since Shalit capture