2015 Keystone Cougar TT Slide-out Floor Construction

I have a 2015 Keystone Cougat TT 27RLSWE and want to screw table bases to the slide out floor. I'm told this trailer has 2 layers of 3/16 luan and tubing. Not sure what this means for screwing into to mount table bases.
Can I screw table bases into slide out floor for a secure mounting?