I don't know if you can go down down for the warm-ups if you don't have seats in that section. Since I never have seats that low there, I've never even tried to go down. The security at Staples is pretty tight, that I do know.
hmmm.... last time I sat in the lower level, and I saw [font=新]some[/font] fans came down and took some pictures.
and I got this from LA Kings website
Gates will open 1½ hours prior to all Kings home games. Fans will be allowed to watch warm-ups in the lower level, but are requested to return to their assigned seats once warm-ups end.