the front does have a roll down flap that is zipped on both sides, with zip pull inside and out, useful if you want to hide from the wife...also, there are a couple of holes on the flaps you could tie the zips to.
it comes with a couple of ground anchors you can screw into the ground but Ive drilled a handful of holes in the drive and fitted rawlplugs with long screws as we want to take with us then can fill holes with sealer. 4 fixed points on each side. After a couple of wet days, its dry under as long flaps touch the floor on the outside so helps divert the rain.
We did try the double bottle bags that are sold for gazebos but would need more.
I will add, it allows the car to be parked inside with windows open and no condensation , wet inside windows and the steering wheel no longer sticky.