The Levites lived as sojourners among the other Israelites. While they had their own cities, they did not possess land and territorial inheritances as the other Israelites did. However the privilege of serving God as they alone could was compensation much greater than their loss of physical benefits. They could eat the produce of the land. In addition to the tithes, the Levites also received the parts of the sacrifices allotted to them that included meat of various kinds, wine, oil, and wool ( Deuteronomy 18:3-4). [source][source][source]
Evidently not all the Levites served at the tabernacle. Some simply lived in their assigned cities. Participation in sanctuary services was apparently voluntary to some extent ( Deuteronomy 18:6-8). God did not preserve in Scripture the plan whereby individual Levites served in carrying out various duties at this period in Israel"s history (cf. Numbers 18). This passage refutes the Wellhausian view that all Levites could be priests. [1][source]
One writer argued that Deuteronomy 18:8 permitted the Levites to sell the remains of a sacrificed animal. [2] Most translators believed this verse allowed them to sell their family possessions. [source][source][source]