THe club I sail at would not survive without income from open meetings. We run about 13 a year. Some are absoulutly massive - The RS open (RS200/300/400/600/700/800) has now had to be split up as we were getting more than our max (250 boats) for an open. We also do a cat open once a year that (recently) has been averaging around 130 boats. A few years ago we were getting 200+ cats.
200 cats, 8 feet wide, 1 foot to walk around = 1800 feet of beach room