How much weight does each gazebo leg need?
The amount is set by your permit, not by us. Council and market organisers usually state a minimum ballast per leg, and the site manager checks it before you are allowed to trade, so read the conditions you were issued and buy to them.
Weigh every leg, not just the two on the windward side. Fit the ballast as the marquee goes up rather than after, so no leg is left light while the frame is still moving.
Keep a note of what you have on each leg, including the weight of each plate or bag. If an organiser asks for the total ballast on site, a written record answers the question quickly and avoids a last-minute scramble on the day.
Wind is the reason ballast matters, because a marquee acts like a sail once the walls are fitted. Heavier weights on the legs that face the prevailing wind keep the frame steady when gusts arrive.