No, you don't have to pay anything. Just lock it to the meter with the bike on the sidewalk. Don't put the bike sitting on the street side because a car will hit it. The meters are for the parking spaces. You are not using the parking space so you don't have to pay. Now this is a general answer. Your specific town may have some law against locking to meters so you might want to check that out. But I have never seen a place where that was against the law. Oh and make sure you use a lock that can't just be lifted over the top of the meter. Good luck