The front plate holder you should have gotten with your car, attaches to the bumper with three pop rivets. You are supposed to drill three 1/8th inch holes where the dimples are in the bumper and pop rivet the holder in place. The plate than attaches with bolts to the holder.
I didn't want to drill holes so I bought one of the neoprene rubber plate holders like dealers use for hanging a temp plate on for test drives.
The tabs at the top that the dealer would stick under the trunk lid, I stuck into the grill and then tie wrapped them around to the holes in the bottom of the plate. Very secure and it means only neoprene rubber is coming in contact with the car and the edges of the plate are surrounded by neoprene so if I want to keep using the same plate and just buy stickers, it should still look OK for a couple of years.
I just don't like the plate off center which is what happens when you use the tow hook mount. Plus, they are pricey. The neoprene plate holder can be had for $10 bucks.