If you have a free standing table i.e not attached to the side of the van, then you will usually have to bolt the mount through the floor of the van.
I have belly pans on mine and have cut a hole in the pan (which is secured by stainless screws and sealant so I can access the mount under the van floor.
The depth of your laminate or flooring is whats key, as If you have a deep floor of ply and laminate you will not have to cut a recess in the metal floor (to get the flush mount for the leg) most people will have to cut a bigger hole in the floor to put the leg mount into.
Remember measure 30 times and cut once :wink:
Also see wether you want to have the table up at the same time the bed is out, as you can have the table up and the bed out together but if its in the wrong place then you cant, and what are you gonna put your mug of hot choc on before bed! :wink:
Have a play around and see where is the perf place then get the drill out and its on! 8)