Once Bnei Yisrael (Jewish people) entered Eretz Yisrael (land of Israel) and came to Gilgal, they put up the Mishkan (Tabernacle) there. The Mishkan that was put up was the same one used in the Midbar, the desert, and it stayed there for the next 14 years. The first 7 years of those 14 were spent conquering the land. They were battling, fighting a war, and the next 7 years they divided up the land according to each Shevet, each tribe.
At that time, the Bamot became permitted. Bamot, the individual altars, the Mizbechot (altars) that they had, are only prohibited when there is a camp for the Jewish people. In the Midbar, there was a Machaneh (camp). The Jewish people had a certain location, and only when that type of set spots are designated are the Jewish people not allowed to have Bamot. Once they entered Eretz Yisrael and began to go to all different spots of the land, the prohibition against having a Bama (altar) didn’t apply anymore.
At that point in time, during this period, were only allowed to be eaten within the curtains that surrounded the courtyard of the Mishkan. So that was still in play for any, but Kodashim Kalim (lesser sanctities) were allowed to be eaten anywhere. Usually, Kodashim Kalim are only allowed to be eaten within the camp of the Jewish people, but as we stated, there was no more camp of the Jewish people. They were dispersed throughout the land of Israel, so therefore the idea of eating Kodashim Kalim became permitted anywhere. Anywhere within Israel, anywhere within Eretz Yisrael was okay. There was no requirement to eat it in any specific spot.