This is a nightmare to set up.  You have to buy a special socket wrench $40 to put the piece in that holds the umbrella.  The hole for the sand is about the size of a .50 cent piece and it takes about 3 hours to fill it with the damp play sand you buy at Lowe's.  Yes, all the bags weigh 50lbs and are damp.  I suggest you buy the sand and big funnel plus special socket 1  13/16th a week before and open the bag so that the sand can dry or else you have to cut the bottom off the funnel to make the hole bigger and jam the sand down the hole.  Not user friendly at all.