I can not get the LAS to Multipoint tool to store attributes of the LAS file.
I have tried on several different datasets but all I get in the attribute table are the standard "Shape" and "PointCount" fields. When I try to store e.g. Intensity, there is no column in the attribute table.
I stumbled with this myself at 10. The answer (at least to my problem) was that the attributes were indeed being written to the attribute table but the fields are not turned on by default in ArcMap. So just open the FC properties and click the Fields tab and you'll see "Intensity" (or other Las attribute) there, click the checkbox next to it and you should be good.