Common local codes in the Seattle area prohibit parking campers or boats where they're "visible from the street" but in most places if you cover them with a tarp they're "invisible." Since the common blue tarps are the cheapest, commercial airline pilots refer to Seattle as "blue tarp city."

My experience using "blue tarps" for camping a week or two each year is that expecting them to finish the second use is "overly optimistic," but some of the "aluminum colored" slightly more expensive ones (even from Walmart) have lasted me ten years or more without a rip.

Even more durable ones are available from the farm equipment stores, but most are too big for my camp use so I've haven't had much experience with them. The "industrial" kind are also at some truck stops, but seem significantly more expensive there.

Be aware that a large canvas is a sail and very sturdy posts are about as important as the quality of the tarp if you want it to stay up for a while where it can cast a shadow.

John